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Frontiers in Chemistry: Rising Stars (2021)

Frontiers Media SA

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Publikationsdatum: 2024-04-04

Beschreibung: The Frontiers in Chemistry Editorial Office team are delighted to present the inaugural “Frontiers in Chemistry: Rising Stars” article collection, showcasing the high-quality work of internationally recognized researchers in the early stages of their independent careers. All Rising Star researchers featured within this collection were individually nominated by the Journal’s Chief Editors in recognition of their potential to influence the future directions in their respective fields. The work presented here highlights the diversity of research performed across the entire breadth of the chemical sciences, and presents advances in theory, experiment and methodology with applications to compelling problems. This Editorial features the corresponding author(s) of each paper published within this important collection, ordered by section alphabetically, highlighting them as the great researchers of the future. The Frontiers in Chemistry Editorial Office team would like to thank each researcher who contributed their work to this collection. We would also like to personally thank our Chief Editors for their exemplary leadership of this article collection; their strong support and passion for this important, community-driven collection has ensured its success and global impact.

Schlagwort(e): Green and Sustainable Chemistry ; Analytical Chemistry ; Theoretical and Computational Chemistry ; Polymer Chemistry ; Medicinal and Pharmaceutical Chemistry ; Organic Chemistry ; Nanoscience ; Catalysis and Photocatalysis ; Supramolecular Chemistry ; Electrochemistry ; Inorganic Chemistry ; Chemical Biology ; thema EDItEUR::P Mathematics and Science::PD Science: general issues

Sprache: Englisch

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Properties of dirty two-band superconductors with repulsive interband interaction: Normal modes, length scales, vortices, and magnetic response (2018)

Julien Garaud, Alberto Corticelli, Mihail Silaev, and Egor Babaev

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): Julien Garaud, Alberto Corticelli, Mihail Silaev, and Egor Babaev Disorder in two-band superconductors with repulsive interband interaction induces a frustrated competition between the phase-locking preferences of the various potential and kinetic terms. This frustrated interaction can result in the formation of an s + i s superconducting state that breaks the time-r... [Phys. Rev. B 98, 014520] Published Wed Jul 25, 2018

Schlagwort(e): Superfluidity and superconductivity

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Thema: Physik

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Enhanced quasiparticle lifetime in a superconductor by selective blocking of recombination phonons with a phononic crystal (2018)

K. Rostem, P. J. de Visser, and E. J. Wollack

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-28

Beschreibung: Author(s): K. Rostem, P. J. de Visser, and E. J. Wollack When quasiparticles in a BCS superconductor recombine into Cooper pairs, phonons are emitted within a narrow band of energies above the pairing energy at 2 Δ . We show that a phonon band gap restricting the escape of recombination phonons from a superconductor can increase the quasiparticle recombinat... [Phys. Rev. B 98, 014522] Published Fri Jul 27, 2018

Schlagwort(e): Superfluidity and superconductivity

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Spin-orbit-coupled ferroelectric superconductivity (2018)

Shota Kanasugi and Youichi Yanase

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-28

Beschreibung: Author(s): Shota Kanasugi and Youichi Yanase Motivated by recent studies on ferroelectriclike order coexisting with metallicity, we investigate ferroelectric (FE) superconductivity in which a FE-like structural phase transition occurs in the superconducting state. We consider a two-dimensional s -wave superconductor with Rashba-type antisymmetr... [Phys. Rev. B 98, 024521] Published Fri Jul 27, 2018

Schlagwort(e): Superfluidity and superconductivity

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Spatial distribution of superfluidity and superfluid distillation of Bose liquids (2018)

T. J. Volkoff and Yongkyung Kwon

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): T. J. Volkoff and Yongkyung Kwon Under the assumption of two-fluid kinematics of a nonrelativistic Bose liquid in the presence of a local velocity field v ( x ) , local Galilei transformations are used to derive formulas for the spatial distribution of superfluidity. The local formulation is shown to subsume several descriptions of sup... [Phys. Rev. B 98, 014519] Published Wed Jul 25, 2018

Schlagwort(e): Superfluidity and superconductivity

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Soft phonons reveal the nematic correlation length in $\mathrm{Ba}{({\mathrm{Fe}}_{0.94}{\mathrm{Co}}_{0.06})}_{2}{\mathrm{As}}_{2}$ (2018)

F. Weber, D. Parshall, L. Pintschovius, J.-P. Castellan, M. Kauth, M. Merz, Th. Wolf, M. Schütt, J. Schmalian, R. M. Fernandes, and D. Reznik

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-25

Beschreibung: Author(s): F. Weber, D. Parshall, L. Pintschovius, J.-P. Castellan, M. Kauth, M. Merz, Th. Wolf, M. Schütt, J. Schmalian, R. M. Fernandes, and D. Reznik Nematicity is ubiquitous in electronic phases of high- T c superconductors, particularly in the Fe-based systems. While several experiments have probed nematic fluctuations, they have been restricted to uniform or momentum-averaged fluctuations. Here, we investigate the behavior of finite-momentum nem... [Phys. Rev. B 98, 014516] Published Tue Jul 24, 2018

Schlagwort(e): Superfluidity and superconductivity

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Resolving different pairing states in Weyl superconductors through the single-particle spectrum (2018)

Tao Zhou, Yi Gao, and Z. D. Wang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-25

Beschreibung: Author(s): Tao Zhou, Yi Gao, and Z. D. Wang We study theoretically single-particle spectra of Weyl superconductors. Three different superconducting pairing states are addressed, which are the BCS-type states with the s -wave pairing symmetry and the p + i p -wave pairing symmetry, and the FFLO pairing state. We elaborate that these three states ca... [Phys. Rev. B 98, 024515] Published Tue Jul 24, 2018

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Light-induced new collective modes in the superconductor ${\mathrm{La}}_{1.905}{\mathrm{Ba}}_{0.095}{\mathrm{CuO}}_{4}$ (2018)

S. J. Zhang, Z. X. Wang, L. Y. Shi, T. Lin, M. Y. Zhang, G. D. Gu, T. Dong, and N. L. Wang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-25

Beschreibung: Author(s): S. J. Zhang, Z. X. Wang, L. Y. Shi, T. Lin, M. Y. Zhang, G. D. Gu, T. Dong, and N. L. Wang We report near and midinfrared pump, c -axis terahertz probe measurements on a superconducting single crystal La 1.905 Ba 0.095 CuO 4 with T c = 32 K. The measurements reveal that the pump-induced change occurs predominantly at the Josephson plasma edge position below T c . Upon excitation by strong near-infra... [Phys. Rev. B 98, 020506(R)] Published Tue Jul 24, 2018

Schlagwort(e): Superfluidity and superconductivity

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Suppression of the magnetic order in CeFeAsO: Nonequivalence of hydrostatic and in-plane chemical pressure (2018)

Philipp Materne, Wenli Bi, Esen Ercan Alp, Jiyong Zhao, Michael Yu Hu, Anton Jesche, Christoph Geibel, Rhea Kappenberger, Saicharan Aswartham, Sabine Wurmehl, Bernd Büchner, Dongzhou Zhang, Til Goltz, Johannes Spehling, and Hans-Henning Klauss

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-25

Beschreibung: Author(s): Philipp Materne, Wenli Bi, Esen Ercan Alp, Jiyong Zhao, Michael Yu Hu, Anton Jesche, Christoph Geibel, Rhea Kappenberger, Saicharan Aswartham, Sabine Wurmehl, Bernd Büchner, Dongzhou Zhang, Til Goltz, Johannes Spehling, and Hans-Henning Klauss We present a detailed investigation of the electronic properties of CeFeAsO under in-plane chemical (As by P substitution) and hydrostatic pressure by means of in-house and synchrotron Mössbauer spectroscopy. The Fe magnetism is suppressed due to both pressures and no magnetic order was observed abo... [Phys. Rev. B 98, 014517] Published Tue Jul 24, 2018

Schlagwort(e): Superfluidity and superconductivity

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Josephson-effect diagnostic of competing orders in quantum critical multiband superconductors (2018)

Maxim Dzero and Alex Levchenko

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): Maxim Dzero and Alex Levchenko Motivated by the recent experimentally observed manifestations of the quantum critical point fluctuations in the thermodynamic properties of multiband superconductors, we derive a general expression for the Josephson current of various junctions between two superconductors in the phase of supercondu... [Phys. Rev. B 98, 054501] Published Mon Aug 06, 2018

Schlagwort(e): Superfluidity and superconductivity

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Magnetic tricritical point and nematicity in FeSe under pressure (2018)

Rustem Khasanov, Rafael M. Fernandes, Gediminas Simutis, Zurab Guguchia, Alex Amato, Hubertus Luetkens, Elvezio Morenzoni, Xiaoli Dong, Fang Zhou, and Zhongxian Zhao

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-14

Beschreibung: Author(s): Rustem Khasanov, Rafael M. Fernandes, Gediminas Simutis, Zurab Guguchia, Alex Amato, Hubertus Luetkens, Elvezio Morenzoni, Xiaoli Dong, Fang Zhou, and Zhongxian Zhao Magnetism induced by external pressure ( p ) was studied in a FeSe crystal sample by means of muon-spin rotation. The magnetic transition changes from second order to first order for pressures exceeding the critical value p c ≃ 2.4 – 2.5 GPa. The magnetic ordering temperature ( T N ) and the value of the magn... [Phys. Rev. B 97, 224510] Published Wed Jun 13, 2018

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Spin-imbalanced pairing and Fermi surface deformation in flat bands (2018)

Kukka-Emilia Huhtinen, Marek Tylutki, Pramod Kumar, Tuomas I. Vanhala, Sebastiano Peotta, and Päivi Törmä

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-06

Beschreibung: Author(s): Kukka-Emilia Huhtinen, Marek Tylutki, Pramod Kumar, Tuomas I. Vanhala, Sebastiano Peotta, and Päivi Törmä We study the attractive Hubbard model with spin imbalance on two lattices featuring a flat band: the Lieb and kagome lattices. We present mean-field phase diagrams featuring exotic superfluid phases, similar to the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, whose stability is confirmed by dynami... [Phys. Rev. B 97, 214503] Published Tue Jun 05, 2018

Schlagwort(e): Superfluidity and superconductivity

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Distinguishing topological Majorana bound states from trivial Andreev bound states: Proposed tests through differential tunneling conductance spectroscopy (2018)

Chun-Xiao Liu, Jay D. Sau, and S. Das Sarma

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-06

Beschreibung: Author(s): Chun-Xiao Liu, Jay D. Sau, and S. Das Sarma Trivial Andreev bound states arising from chemical-potential variations could lead to zero-bias tunneling conductance peaks at finite magnetic field in class-D nanowires, precisely mimicking the predicted zero-bias conductance peaks arising from the topological Majorana bound states. This finding ra... [Phys. Rev. B 97, 214502] Published Tue Jun 05, 2018

Schlagwort(e): Superfluidity and superconductivity

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Thermoelectric anisotropy in the iron-based superconductor $\mathrm{Ba}{({\mathrm{Fe}}_{1−x}{\mathrm{Co}}_{x})}_{2}{\mathrm{As}}_{2}$ (2018)

Marcin Matusiak, Krzysztof Rogacki, and Thomas Wolf

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-06

Beschreibung: Author(s): Marcin Matusiak, Krzysztof Rogacki, and Thomas Wolf Nematicity turns out to be a surprisingly common form of self-organization in strongly correlated electronic systems. Its presence along with superconductivity raises the question about a mutual relation between these two types of electronic order as well as about mechanisms that leads to their formation. Here, the authors show that the in-plane anisotropy of the Nernst effect (Δ ν / T ) in detwinned Ba(Fe 1 − x Co x ) 2 As 2 single crystals emerges at a temperature much higher than the temperature of the magnetic transition (TSDW). Furthermore, the temperature dependence of Δ ν / T retains its exponential character below and above TSDW, which suggests that the origin of nematicity might be something different from magnetic. [Phys. Rev. B 97, 220501(R)] Published Tue Jun 05, 2018

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Unusual phonon density of states and response to the superconducting transition in the In-doped topological crystalline insulator ${\mathrm{Pb}}_{0.5}{\mathrm{Sn}}_{0.5}\mathrm{Te}$ (2018)

Kejing Ran, Ruidan Zhong, Tong Chen, Yuan Gan, Jinghui Wang, B. L. Winn, A. D. Christianson, Shichao Li, Zhen Ma, Song Bao, Zhengwei Cai, Guangyong Xu, J. M. Tranquada, Genda Gu, Jian Sun, and Jinsheng Wen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-16

Beschreibung: Author(s): Kejing Ran, Ruidan Zhong, Tong Chen, Yuan Gan, Jinghui Wang, B. L. Winn, A. D. Christianson, Shichao Li, Zhen Ma, Song Bao, Zhengwei Cai, Guangyong Xu, J. M. Tranquada, Genda Gu, Jian Sun, and Jinsheng Wen We present inelastic neutron scattering results of phonons in ( Pb 0.5 Sn 0.5 ) 1 − x In x Te powders, with x = 0 and 0.3. The x = 0 sample is a topological crystalline insulator, and the x = 0.3 sample is a superconductor with a bulk superconducting transition temperature T c of 4.7 K. In both samples, we observe un... [Phys. Rev. B 97, 220502(R)] Published Fri Jun 15, 2018

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Weak metal-metal transition in the vanadium oxytelluride ${\mathrm{Rb}}_{1−δ}{\mathrm{V}}_{2}{\mathrm{Te}}_{2}\mathrm{O}$ (2018)

Abduweli Ablimit, Yun-Lei Sun, Hao Jiang, Si-Qi Wu, Ya-Bin Liu, and Guang-Han Cao

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-21

Beschreibung: Author(s): Abduweli Ablimit, Yun-Lei Sun, Hao Jiang, Si-Qi Wu, Ya-Bin Liu, and Guang-Han Cao We report the synthesis, crystal structure, physical properties, and first-principles calculations of a vanadium-based oxytelluride Rb 1 − δ V 2 Te 2 O ( δ ≈ 0.2 ). The crystal structure bears two-dimensional V 2 O square nets sandwiched with tellurium layers, mimicking the structural motifs of cuprate and iron-b... [Phys. Rev. B 97, 214517] Published Wed Jun 20, 2018

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Large nematic susceptibility in the double-$Q\phantom{\rule{0.16em}{0ex}}{C}_{4}$ magnetic phase of ${\mathrm{Ba}}_{1−x}{\mathrm{Na}}_{x}{\mathrm{Fe}}_{2}{\mathrm{As}}_{2}$ (2018)

Liran Wang, Mingquan He, Frédéric Hardy, Peter Adelmann, Thomas Wolf, Michael Merz, Peter Schweiss, and Christoph Meingast

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-23

Beschreibung: Author(s): Liran Wang, Mingquan He, Frédéric Hardy, Peter Adelmann, Thomas Wolf, Michael Merz, Peter Schweiss, and Christoph Meingast The nematic susceptibility of Ba 1 − x Na x Fe 2 As 2 single crystals is studied by measuring the Young's modulus using a three-point-bending setup in a capacitance dilatometer over a wide doping range. Particular emphasis is placed on the behavior within the double- Q antiferromagnetic C 4 re-entrant phase. H... [Phys. Rev. B 97, 224518] Published Fri Jun 22, 2018

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Josephson coupling in the dissipative state of a thermally hysteretic $μ$-SQUID (2018)

Sourav Biswas, Clemens B. Winkelmann, Hervé Courtois, and Anjan K. Gupta

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-28

Beschreibung: Author(s): Sourav Biswas, Clemens B. Winkelmann, Hervé Courtois, and Anjan K. Gupta Micron-sized superconducting interference devices ( μ -SQUIDs) based on constrictions optimized for minimizing thermal runaway are shown to exhibit voltage oscillations with applied magnetic flux despite their hysteretic behavior. We explain this remarkable feature by a significant supercurrent contri... [Phys. Rev. B 98, 174514] Published Tue Nov 27, 2018

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Extended quantum Maxwell demon acting over macroscopic distances (2018)

A. V. Lebedev, G. B. Lesovik, V. M. Vinokur, and G. Blatter

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-05

Beschreibung: Author(s): A. V. Lebedev, G. B. Lesovik, V. M. Vinokur, and G. Blatter A quantum Maxwell demon is a device that can lower the entropy of a quantum system by providing it with purity. The functionality of such a quantum demon is rooted in a quantum-mechanical SWAP operation exchanging mixed and pure states. We describe the setup and performance of a quantum Maxwell demo... [Phys. Rev. B 98, 214502] Published Tue Dec 04, 2018

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Suppression of superfluid stiffness near a Lifshitz-point instability to finite-momentum superconductivity (2018)

Jonatan Wårdh, Brian M. Andersen, and Mats Granath

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-05

Beschreibung: Author(s): Jonatan Wårdh, Brian M. Andersen, and Mats Granath We derive the effective Ginzburg-Landau (GL) theory for finite-momentum [Fulde-Ferrell-Larkin-Ovchinnikov/pair-density wave (FFLO/PDW)] superconductivity without spin population imbalance from a model with local attraction and repulsive pair hopping. We find that the GL free energy must include up t... [Phys. Rev. B 98, 224501] Published Tue Dec 04, 2018

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Chiral supercurrent through a quantum Hall weak link (2018)

Yahya Alavirad, Junhyun Lee, Ze-Xun Lin, and Jay D. Sau

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-07

Beschreibung: Author(s): Yahya Alavirad, Junhyun Lee, Ze-Xun Lin, and Jay D. Sau We use an effective model to calculate properties of the supercurrent carried by chiral edge states of a quantum Hall weak link. This “chiral” supercurrent is qualitatively distinct from the usual Josephson supercurrent in that it cannot be mediated by a single edge alone, i.e., both right- and left... [Phys. Rev. B 98, 214504] Published Thu Dec 06, 2018

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Mean-field theory for superconductivity in twisted bilayer graphene (2018)

Teemu J. Peltonen, Risto Ojajärvi, and Tero T. Heikkilä

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-11

Beschreibung: Author(s): Teemu J. Peltonen, Risto Ojajärvi, and Tero T. Heikkilä Recent experiments show how a bilayer graphene twisted around a certain magic angle becomes superconducting as it is doped into a region with approximate flat bands. We investigate the mean-field s -wave superconducting state in such a system and show how the state evolves as the twist angle is tuned... [Phys. Rev. B 98, 220504(R)] Published Mon Dec 10, 2018

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Anomalous normal-state resistivity in superconducting $\mathrm{L}{\mathrm{a}}_{2−x}\mathrm{C}{\mathrm{e}}_{x}\mathrm{Cu}{\mathrm{O}}_{4}$: Fermi liquid or strange metal? (2018)

Tarapada Sarkar, Richard L. Greene, and S. Das Sarma

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-11

Beschreibung: Author(s): Tarapada Sarkar, Richard L. Greene, and S. Das Sarma We present experimental results for the in-plane resistivity of the electron-doped cuprate superconductor L a 2 − x C e x Cu O 4 above its transition temperature T c as a function of Ce doping x and temperature. For the doping x between 0.11 and 0.17, where T c varies from 30 K ( x = 0.11 ) to 5 K ( x = 0.17 ), we find... [Phys. Rev. B 98, 224503] Published Mon Dec 10, 2018

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Pressure-induced multiple phase transformations of the ${\mathrm{BaBi}}_{3}$ superconductor (2018)

Li Xiang, Raquel A. Ribeiro, Udhara S. Kaluarachchi, Elena Gati, Manh Cuong Nguyen, Cai-Zhuang Wang, Kai-Ming Ho, Sergey L. Bud'ko, and Paul C. Canfield

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-14

Beschreibung: Author(s): Li Xiang, Raquel A. Ribeiro, Udhara S. Kaluarachchi, Elena Gati, Manh Cuong Nguyen, Cai-Zhuang Wang, Kai-Ming Ho, Sergey L. Bud'ko, and Paul C. Canfield Measurements of temperature-dependent resistance and magnetization under hydrostatic pressures up to 2.13 GPa are reported for single-crystalline, superconducting BaBi 3 . A temperature-pressure phase diagram is determined and the results suggest three different superconducting phases α , β , and γ in t... [Phys. Rev. B 98, 214509] Published Thu Dec 13, 2018

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Realization of continuous electron doping in bulk iron selenides and identification of a new superconducting zone (2018)

R. J. Sun, Y. Quan, S. F. Jin, Q. Z. Huang, H. Wu, L. Zhao, L. Gu, Z. P. Yin, and X. L. Chen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-13

Beschreibung: Author(s): R. J. Sun, Y. Quan, S. F. Jin, Q. Z. Huang, H. Wu, L. Zhao, L. Gu, Z. P. Yin, and X. L. Chen Iron selenide superconductors exhibit unique characteristics distinct from iron pnictides, especially in the electron-doped region. Here, the authors report the synthesis of a new family of Li x (C 3 N 2 H 10 ) 0 . 37 FeSe materials, which features a continuous superconducting dome harboring a Lifshitz transition within the wide range of 0.06 ≤ x ≤ 0.68. Under electron doping, the anion height of FeSe layers deviates linearly away from the optimized values of pnictides. This feature leads to a new superconducting zone with unique electronic structures and strong orbital-selective electronic correlation. [Phys. Rev. B 98, 214508] Published Wed Dec 12, 2018

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First-principles study of superconductivity in the two- and three-dimensional forms of ${\mathrm{PbTiSe}}_{2}$: Suppressed charge density wave in $1T\text{−}{\mathrm{TiSe}}_{2}$ (2018)

Bao-Tian Wang, Peng-Fei Liu, Jing-Jing Zheng, Wen Yin, and Fangwei Wang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-25

Beschreibung: Author(s): Bao-Tian Wang, Peng-Fei Liu, Jing-Jing Zheng, Wen Yin, and Fangwei Wang Layered 1 T − TiSe 2 has attracted much interest for the competition of charge density wave (CDW) and superconductivity in its bulk and even monolayer forms. Here we perform first-principles calculations of the electronic structure, phonon dispersion, and electron-phonon coupling of the Pb-intercalated ... [Phys. Rev. B 98, 014514] Published Tue Jul 24, 2018

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Effect of electrons scattered by optical phonons on superconductivity in $M{\mathrm{H}}_{3}$ ($M=\mathrm{S}$, Ti, V, Se) (2018)

Quan Zhuang, Xilian Jin, Tian Cui, Die Zhang, Ying Li, Xin Li, Kuo Bao, and Bingbing Liu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-25

Beschreibung: Author(s): Quan Zhuang, Xilian Jin, Tian Cui, Die Zhang, Ying Li, Xin Li, Kuo Bao, and Bingbing Liu For exploring the superconductivity mechanisms and seeking potential high-temperature superconductors in hydrogen-rich compounds, we perform a systematical investigation of the phase diagram, crystal structures, electronic properties, and electron-phonon coupling (EPC) of titanium hydrides under hig... [Phys. Rev. B 98, 024514] Published Tue Jul 24, 2018

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Shedding light on topological superconductors (2018)

K. H. A. Villegas, V. M. Kovalev, F. V. Kusmartsev, and I. G. Savenko

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-08

Beschreibung: Author(s): K. H. A. Villegas, V. M. Kovalev, F. V. Kusmartsev, and I. G. Savenko We propose an effective optical approach to monitor superconductors in a two-layer superconductor-normal metal structure. Effectively, such a hybrid system represents a resonator, where electrons are strongly coupled with light. We show that the interaction of light with the superconductor is strong... [Phys. Rev. B 98, 064502] Published Tue Aug 07, 2018

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Disorder-sensitive nodelike small gap in FeSe (2018)

Yue Sun, Shunichiro Kittaka, Shota Nakamura, Toshiro Sakakibara, Peng Zhang, Shik Shin, Koki Irie, Takuya Nomoto, Kazushige Machida, Jingting Chen, and Tsuyoshi Tamegai

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-14

Beschreibung: Author(s): Yue Sun, Shunichiro Kittaka, Shota Nakamura, Toshiro Sakakibara, Peng Zhang, Shik Shin, Koki Irie, Takuya Nomoto, Kazushige Machida, Jingting Chen, and Tsuyoshi Tamegai We investigate the band structure, nematic state, and superconducting gap structure of two selected FeSe single crystals containing different amounts of disorder. Transport and angle-resolved photoemission spectroscopy measurements show that the small amount of disorder has little effect on the band... [Phys. Rev. B 98, 064505] Published Mon Aug 13, 2018

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Nonexponential long-range interaction of magnetic impurities in spin-orbit coupled superconductors (2018)

A. G. Mal'shukov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-14

Beschreibung: Author(s): A. G. Mal'shukov The Ruderman-Kittel-Kasuya-Yosida interaction of magnetic impurities in a superconductor exponentially decreases when the distance r between them is larger than the superconductor's coherence length because this interaction is mediated by quasiparticles, which have a gap in their energy spectra. At ... [Phys. Rev. B 98, 054504] Published Mon Aug 13, 2018

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Quantum phase transitions in proximitized Josephson junctions (2018)

Chien-Te Wu, F. Setiawan, Brandon M. Anderson, Wei-Han Hsiao, and K. Levin

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-14

Beschreibung: Author(s): Chien-Te Wu, F. Setiawan, Brandon M. Anderson, Wei-Han Hsiao, and K. Levin We study fermion-parity-changing quantum phase transitions (QPTs) in platform Josephson junctions. These QPTs, associated with zero-energy bound states, are rather widely observed experimentally. They emerge from numerical calculations frequently without detailed microscopic insight. Importantly, th... [Phys. Rev. B 98, 064504] Published Mon Aug 13, 2018

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Short-range antiferromagnetic correlations in the superconducting state of filled skutterudite alloys ${\mathrm{Pr}}_{1−x}{\mathrm{Eu}}_{x}{\mathrm{Pt}}_{4}{\mathrm{Ge}}_{12}$ (2018)

R. B. Adhikari, D. L. Kunwar, I. Jeon, M. B. Maple, M. Dzero, and C. C. Almasan

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-14

Beschreibung: Author(s): R. B. Adhikari, D. L. Kunwar, I. Jeon, M. B. Maple, M. Dzero, and C. C. Almasan Motivated by current research efforts toward exploring the interplay between magnetism and superconductivity in multiband electronic systems, we have investigated the effects of Eu substitution through thermodynamic measurements on the superconducting filled skutterudite alloys Pr 1 − x Eu x Pt 4 Ge 12 . An i... [Phys. Rev. B 98, 064506] Published Mon Aug 13, 2018

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Unusual suppression of a spin resonance mode by magnetic field in underdoped ${\mathrm{NaFe}}_{1−x}{\mathrm{Co}}_{x}\mathrm{As}$: Evidence for orbital-selective pairing (2018)

Yu Song, Guotai Tan, Chenglin Zhang, Rasmus Toft-Petersen, Rong Yu, and Pengcheng Dai

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-14

Beschreibung: Author(s): Yu Song, Guotai Tan, Chenglin Zhang, Rasmus Toft-Petersen, Rong Yu, and Pengcheng Dai We use inelastic neutron scattering to study the fate of the two spin resonance modes in underdoped superconducting NaFe 1 − x Co x As ( x = 0.0175 ) under applied magnetic fields. While an in-plane magnetic field of B = 12 T only modestly suppresses superconductivity and enhances static antiferromagnetic order,... [Phys. Rev. B 98, 064507] Published Mon Aug 13, 2018

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Optical conductivity of overdoped cuprate superconductors: Application to ${\mathrm{La}}_{2−x}{\mathrm{Sr}}_{x}{\mathrm{CuO}}_{4}$ (2018)

N. R. Lee-Hone, V. Mishra, D. M. Broun, and P. J. Hirschfeld

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-15

Beschreibung: Author(s): N. R. Lee-Hone, V. Mishra, D. M. Broun, and P. J. Hirschfeld We argue that recent measurements on both the superfluid density and the optical conductivity of high-quality La 2 − x Sr x CuO 4 (LSCO) films can be understood almost entirely within the theory of disordered BCS d -wave superconductors. The large scattering rates deduced from experiments are shown to arise... [Phys. Rev. B 98, 054506] Published Tue Aug 14, 2018

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Dimensional crossover in the quasi-one-dimensional superconductor ${\mathrm{Tl}}_{2}{\mathrm{Mo}}_{6}{\mathrm{Se}}_{6}$ (2018)

S. Mitra, A. P. Petrović, D. Salloum, P. Gougeon, M. Potel, Jian-Xin Zhu, C. Panagopoulos, and Elbert E. M. Chia

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-15

Beschreibung: Author(s): S. Mitra, A. P. Petrović, D. Salloum, P. Gougeon, M. Potel, Jian-Xin Zhu, C. Panagopoulos, and Elbert E. M. Chia We present magnetic penetration depth and electrical transport data in single crystals of quasi-one-dimensional (q1D) Tl 2 Mo 6 Se 6 , which reveal a 1 D → 3 D superconducting dimensional crossover. The c -axis penetration depth shows the onset of superconducting fluctuations below T 1 D o n s = 6.7 K, whereas signat... [Phys. Rev. B 98, 054507] Published Tue Aug 14, 2018

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Linear temperature dependence of the upper critical field across the dome of the ${\mathrm{LaAlO}}_{3}−{\mathrm{SrTiO}}_{3}$ interface superconductor (2018)

L. Kuerten, E. Fillis-Tsirakis, C. Richter, J. Mannhart, and H. Boschker

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-16

Beschreibung: Author(s): L. Kuerten, E. Fillis-Tsirakis, C. Richter, J. Mannhart, and H. Boschker Numerous two-dimensional superconductors exhibit a characteristic dome-shaped dependence of the critical temperature T c on the carrier density. The reduction of the critical temperature with increasing charge carrier density on the overdoped side of this dome is frequently related to scattering aris... [Phys. Rev. B 98, 054509] Published Wed Aug 15, 2018

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Geometric Josephson effects in chiral topological nanowires (2018)

Christian Spånslätt

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-16

Beschreibung: Author(s): Christian Spånslätt One of the salient signatures of Majorana zero modes and topological superconductivity is a 4 π -periodic Josephson effect due to the combination of fermion parity conservation and the presence of a topologically protected odd number of zero-energy crossings in the Andreev spectrum. In this paper, we ... [Phys. Rev. B 98, 054508] Published Wed Aug 15, 2018

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Competition of electron-phonon mediated superconductivity and Stoner magnetism on a flat band (2018)

Risto Ojajärvi, Timo Hyart, Mihail A. Silaev, and Tero T. Heikkilä

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-23

Beschreibung: Author(s): Risto Ojajärvi, Timo Hyart, Mihail A. Silaev, and Tero T. Heikkilä The effective attractive interaction between electrons, mediated by electron-phonon coupling, is a well-established mechanism of conventional superconductivity. In metals exhibiting a Fermi surface, the critical temperature of superconductivity is exponentially smaller than the characteristic phonon... [Phys. Rev. B 98, 054515] Published Wed Aug 22, 2018

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Sensitivity of ${T}_{\mathrm{c}}$ to pressure and magnetic field in the cuprate superconductor ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{y}$: Evidence of charge-order suppression by pressure (2018)

O. Cyr-Choinière, D. Le; Boeuf, S. Badoux, S. Dufour-Beauséjour, D. A. Bonn, W. N. Hardy, R. Liang, D. Graf, N. Doiron-Leyraud, and Louis Taillefer

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-31

Beschreibung: Author(s): O. Cyr-Choinière, D. LeBoeuf, S. Badoux, S. Dufour-Beauséjour, D. A. Bonn, W. N. Hardy, R. Liang, D. Graf, N. Doiron-Leyraud, and Louis Taillefer Cuprate superconductors have a universal tendency to form charge density-wave (CDW) order which competes with superconductivity and is strongest at a doping p ≃ 0.12 . Here we show that in the archetypal cuprate YBa 2 Cu 3 O y (YBCO) pressure suppresses charge order but does not affect the pseudogap phase. ... [Phys. Rev. B 98, 064513] Published Thu Aug 30, 2018

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Spontaneous edge current in higher chirality superconductors (2018)

Xin Wang, Zhiqiang Wang, and Catherine Kallin

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-05

Beschreibung: Author(s): Xin Wang, Zhiqiang Wang, and Catherine Kallin The effects of finite temperature, Meissner screening, and surface roughness on the spontaneous edge current for higher chirality quasi-two-dimensional superconductors are studied in the continuum limit using the quasiclassical Eilenberger equations. We find that the total spontaneous current is non... [Phys. Rev. B 98, 094501] Published Tue Sep 04, 2018

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Exactly solvable model for two-dimensional topological superconductors (2018)

Zitao Wang, Shang-Qiang Ning, and Xie Chen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-05

Beschreibung: Author(s): Zitao Wang, Shang-Qiang Ning, and Xie Chen In this paper, we present an exactly solvable model for two-dimensional topological superconductors with helical Majorana edge modes protected by time-reversal symmetry. Our construction is based on the idea of decorated domain walls and makes use of the Kasteleyn orientation on a two-dimensional la... [Phys. Rev. B 98, 094502] Published Tue Sep 04, 2018

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Hidden charge-conjugation, parity, and time-reversal symmetries and massive Goldstone (Higgs) modes in superconductors (2018)

Shunji Tsuchiya, Daisuke Yamamoto, Ryosuke Yoshii, and Muneto Nitta

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-05

Beschreibung: Author(s): Shunji Tsuchiya, Daisuke Yamamoto, Ryosuke Yoshii, and Muneto Nitta A massive Goldstone (MG) mode, often referred to as a Higgs amplitude mode, is a collective excitation that arises in a system involving spontaneous breaking of a continuous symmetry, along with a gapless Nambu-Goldstone mode. It has been known in the previous studies that a pure amplitude MG mode e... [Phys. Rev. B 98, 094503] Published Tue Sep 04, 2018

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High-pressure phase diagram of ${\mathrm{NdFeAsO}}_{0.9}{\mathrm{F}}_{0.1}$: Disappearance of superconductivity on the verge of ferromagnetism from Nd moments (2018)

M. Abdel-Hafiez, M. Mito, K. Shibayama, S. Takagi, M. Ishizuka, A. N. Vasiliev, C. Krellner, and H. K. Mao

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-05

Beschreibung: Author(s): M. Abdel-Hafiez, M. Mito, K. Shibayama, S. Takagi, M. Ishizuka, A. N. Vasiliev, C. Krellner, and H. K. Mao We investigated transport and magnetic properties of single crystal NdFeAsO 0.9 F 0.1 under hydrostatic pressures up to 50 GPa. The ambient pressure superconductivity at T c ∼ 45.4 K was fully suppressed at P c ∼ 21 GPa. Upon a further increase of pressure, ferromagnetism associated with the order of the ra... [Phys. Rev. B 98, 094504] Published Tue Sep 04, 2018

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Solitonic thermal transport in a current-biased long Josephson junction (2018)

Claudio Guarcello, Paolo Solinas, Alessandro Braggio, and Francesco Giazotto

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-05

Beschreibung: Author(s): Claudio Guarcello, Paolo Solinas, Alessandro Braggio, and Francesco Giazotto We investigate the coherent energy and thermal transport in a temperature-biased long Josephson tunnel junction, when a Josephson vortex, i.e., a soliton, steadily drifts driven by an electric bias current. We demonstrate that thermal transport through the junction can be controlled by the bias curr... [Phys. Rev. B 98, 104501] Published Tue Sep 04, 2018

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Polarization of the spontaneous magnetic field and magnetic fluctuations in $\mathit{s}+\mathit{is}$ anisotropic multiband superconductors (2018)

V. L. Vadimov and M. A. Silaev

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-08

Beschreibung: Author(s): V. L. Vadimov and M. A. Silaev We show that multiband superconductors with broken time-reversal symmetry can produce spontaneous currents and magnetic fields in response to the local variations of pairing constants. Considering the iron pnictide superconductor Ba 1 − x K x Fe 2 As 2 as an example we demonstrate that both the point-group s... [Phys. Rev. B 98, 104504] Published Fri Sep 07, 2018

Schlagwort(e): Superfluidity and superconductivity

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Magnetoenhancement of superconductivity in composite $d$-wave superconductors (2018)

Mauro Schiulaz, Christopher L. Baldwin, Chris R. Laumann, and Boris Z. Spivak

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-11

Beschreibung: Author(s): Mauro Schiulaz, Christopher L. Baldwin, Chris R. Laumann, and Boris Z. Spivak We study composite d -wave superconductors consisting of randomly oriented and randomly distributed superconducting droplets embedded in a matrix. In a certain range of parameters the application of a small magnetic field enhances the superconductivity in these materials, while larger fields suppress... [Phys. Rev. B 98, 094508] Published Mon Sep 10, 2018

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Self-consistent temperature dependence of quasiparticle bands in monolayer FeSe on ${\mathrm{SrTiO}}_{3}$ (2018)

Fabian Schrodi, Alex Aperis, and Peter M. Oppeneer

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-12

Beschreibung: Author(s): Fabian Schrodi, Alex Aperis, and Peter M. Oppeneer We study the temperature evolution of the quasiparticle bands of the FeSe monolayer on the SrTiO 3 (STO) substrate from 10 to 300 K by applying the anisotropic, multiband, and full-bandwidth Eliashberg theory. To achieve this, we extend this theory by self-consistently coupling the chemical potential... [Phys. Rev. B 98, 094509] Published Tue Sep 11, 2018

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Gap equation with pairing correlations beyond the mean-field approximation and its equivalence to a Hugenholtz-Pines condition for fermion pairs (2018)

L. Pisani, P. Pieri, and G. Calvanese Strinati

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-12

Beschreibung: Author(s): L. Pisani, P. Pieri, and G. Calvanese Strinati The equation for the gap parameter represents the main equation of the pairing theory of superconductivity. Although it is formally defined through a single-particle property, physically, it reflects the pairing correlations between opposite-spin fermions. Here, we exploit this physical connection a... [Phys. Rev. B 98, 104507] Published Tue Sep 11, 2018

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Persistence of pinning and creep beyond critical drive within the strong pinning paradigm (2018)

M. Buchacek, R. Willa, V. B. Geshkenbein, and G. Blatter

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-13

Beschreibung: Author(s): M. Buchacek, R. Willa, V. B. Geshkenbein, and G. Blatter Pinning and thermal creep determine the response of numerous systems containing superstructures, e.g., vortices in type II superconductors, domain walls in ferroics, or dislocations in metals. The combination of drive and thermal fluctuations leads to the superstructure's depinning, and its velocity... [Phys. Rev. B 98, 094510] Published Wed Sep 12, 2018

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Critical behavior of dynamic vortex Mott transition in superconducting arrays at fractional vortex densities (2018)

Enzo Granato

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-13

Beschreibung: Author(s): Enzo Granato We study the differential resistivity transition of two-dimensional superconducting arrays induced by an external driving current, in the presence of thermal fluctuations and a magnetic field corresponding to f flux quantum per plaquette. Recent experiments have identified this transition as a dynam... [Phys. Rev. B 98, 094511] Published Wed Sep 12, 2018

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Transverse vortex commensurability effect and sign change of the Hall voltage in superconducting ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7−δ}$ thin films with a nanoscale periodic pinning landscape (2018)

G. Zechner, W. Lang, M. Dosmailov, M. A. Bodea, and J. D. Pedarnig

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-19

Beschreibung: Author(s): G. Zechner, W. Lang, M. Dosmailov, M. A. Bodea, and J. D. Pedarnig In superconductors with a periodic pinning potential, the vortices can lock into a commensurate arrangement, where each pin is filled by one vortex. Then, an intriguing duality between conduction electrons in a normal metal and mobile vortices in a superconductor arises. While the mutual repulsion of electrons can evoke a Mott insulator, the interaction between mobile and commensurably trapped vortices can lead to a vortex Mott metal-to-insulator transition with vanishing resistance. The authors report on a hitherto unknown manifestation of such a state, uncovered by measurements of the voltage orthogonal to the injected current. This vortex Hall effect exhibits a sharp peak and a change of sign when the number of vortices exactly matches that of the pins. [Phys. Rev. B 98, 104508] Published Tue Sep 18, 2018

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Self-energies and quasiparticle scattering interference (2018)

Miguel Antonio Sulangi and Jan Zaanen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-25

Beschreibung: Author(s): Miguel Antonio Sulangi and Jan Zaanen The cuprate high-temperature superconductors are known to host a wide array of effects due to interactions and disorder. In this paper, we look at some of the consequences of these effects which can be visualized by scanning tunneling spectroscopy in order to provide a guide for future experiments. ... [Phys. Rev. B 98, 094518] Published Mon Sep 24, 2018

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Normal-state properties of the antiperovskite oxide ${\mathrm{Sr}}_{3−x}\mathrm{SnO}$ revealed by $^{119}\mathrm{Sn}$-NMR (2018)

Shunsaku Kitagawa, Kenji Ishida, Mohamed Oudah, Jan Niklas Hausmann, Atsutoshi Ikeda, Shingo Yonezawa, and Yoshiteru Maeno

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-22

Beschreibung: Author(s): Shunsaku Kitagawa, Kenji Ishida, Mohamed Oudah, Jan Niklas Hausmann, Atsutoshi Ikeda, Shingo Yonezawa, and Yoshiteru Maeno We have performed Sn 119 -NMR measurements on the antiperovskite oxide superconductor Sr 3 − x SnO to investigate how its normal state changes with the Sr deficiency. A two-peak structure was observed in the NMR spectra of all the measured samples. This suggests that the phase separation tends to occur be... [Phys. Rev. B 98, 100503(R)] Published Fri Sep 21, 2018

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Effect of gap anisotropy on the spin resonance peak in the superconducting state of iron-based materials (2018)

M. M. Korshunov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-25

Beschreibung: Author(s): M. M. Korshunov Spin resonance in the superconducting state of Fe-based materials within the multiorbital model with unequal anisotropic gaps on different Fermi surface sheets is studied. On the basis of the model gap function and the one calculated within the spin fluctuation theory of pairing, I show that the res... [Phys. Rev. B 98, 104510] Published Mon Sep 24, 2018

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How vortex bound states affect the Hall conductivity of a chiral $p±ip$ superconductor (2018)

Daniel Ariad, Yshai Avishai, and Eytan Grosfeld

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-25

Beschreibung: Author(s): Daniel Ariad, Yshai Avishai, and Eytan Grosfeld The physics of a planar chiral p ± i p superconductor is studied for various vortex configurations. The occurrence of vortex quasiparticle bound states is exposed together with their ensuing collective properties, such as subgap bands induced by intervortex tunneling. A general method to diagonalize th... [Phys. Rev. B 98, 104511] Published Mon Sep 24, 2018

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Spin-split conductance and subgap peak in ferromagnet/superconductor spin valve heterostructures (2018)

Evan Moen and Oriol T. Valls

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-26

Beschreibung: Author(s): Evan Moen and Oriol T. Valls We consider the separate spin channel contributions to the charge conductance in superconducting/ferromagnetic spin valve F 1 / N / F 2 / S structures. We find that the up- and down-spin conductance contributions may have a very different behavior in the subgap bias region (i.e., there is a spin-split condu... [Phys. Rev. B 98, 104512] Published Tue Sep 25, 2018

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Thermoelectric studies of ${\mathrm{Ir}}_{1−x}{\mathrm{Rh}}_{x}{\mathrm{Te}}_{2}$ ($0≤x≤0.3$) (2018)

Yu Liu (刘育), Hechang Lei (雷和畅), Kefeng Wang (王克锋), Milinda Abeykoon, J. B. Warren, Emil Bozin, and C. Petrovic

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-27

Beschreibung: Author(s): Yu Liu (刘育), Hechang Lei (雷和畅), Kefeng Wang (王克锋), Milinda Abeykoon, J. B. Warren, Emil Bozin, and C. Petrovic We report thermoelectric properties of Ir 1 − x Rh x Te 2 ( 0 ≤ x ≤ 0.3 ) alloy series where superconductivity at low temperatures emerges as the high-temperature structural transition ( T s ) is suppressed. The isovalent ionic substitution of Rh into Ir has different effects on physical properties when compared to... [Phys. Rev. B 98, 094519] Published Wed Sep 26, 2018

Schlagwort(e): Superfluidity and superconductivity

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Generation of pure superconducting spin current in magnetic heterostructures via nonlocally induced magnetism due to Landau Fermi liquid effects (2018)

X. Montiel and M. Eschrig

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-27

Beschreibung: Author(s): X. Montiel and M. Eschrig The authors propose a novel mechanism for the creation of superconducting spin currents in a ferromagnet/superconductor/normal-metal heterostructure via a non-locally induced exchange field in the normal layer, which exhibits Landau Fermi liquid interactions. When the structure enters the superconducting state, spin-triplet superconducting correlations transfer spin across the superconductor and induce remotely a magnetization in the normal layer. The authors then show that in the presence of strong spin-orbit interaction in the normal-metal layer, the induced magnetization is rotated with respect to the magnetization in the ferromagnet. This magnetization misalignment leads to a spin torque on both magnetizations and causes a superconducting spin current to flow across the superconductor. These results open new avenues for designing devices for superconducting spintronics. [Phys. Rev. B 98, 104513] Published Wed Sep 26, 2018

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Stability of half-quantum vortices in equal-spin pairing states of $^{3}\mathrm{He}$ (2018)

Natsuo Nagamura and Ryusuke Ikeda

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-29

Beschreibung: Author(s): Natsuo Nagamura and Ryusuke Ikeda Recent experiments on superfluid He 3 in globally anisotropic aerogels have shown realization of the polar superfluid phase and of the half-quantum vortices (HQVs) in this phase upon rotation. To clarify why the HQVs, which had not been detected clearly in the A phase of the bulk liquid, have been re... [Phys. Rev. B 98, 094524] Published Fri Sep 28, 2018

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Temperature-dependent local structure and superconductivity of ${\mathrm{BaPd}}_{2}{\mathrm{As}}_{2}$ and ${\mathrm{SrPd}}_{2}{\mathrm{As}}_{2}$ (2018)

K. Terashima, E. Paris, L. Simonelli, E. Salas-Colera, A. Puri, T. Wakita, Y. Yamada, S. Nakano, H. Idei, K. Kudo, M. Nohara, Y. Muraoka, T. Mizokawa, T. Yokoya, and N. L. Saini

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-29

Beschreibung: Author(s): K. Terashima, E. Paris, L. Simonelli, E. Salas-Colera, A. Puri, T. Wakita, Y. Yamada, S. Nakano, H. Idei, K. Kudo, M. Nohara, Y. Muraoka, T. Mizokawa, T. Yokoya, and N. L. Saini The local structures of 122-type paradium arsenides, namely BaPd 2 As 2 and SrPd 2 As 2 , are examined by As K -edge extended x-ray absorption fine structure measurements to find a possible correlation between the variation of their superconducting transition temperature and the local structure. The local a... [Phys. Rev. B 98, 094525] Published Fri Sep 28, 2018

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$π$/2-Josephson junction as a topological superconductor (2018)

Zhesen Yang, Shengshan Qin, Qiang Zhang, Chen Fang, and Jiangping Hu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-29

Beschreibung: Author(s): Zhesen Yang, Shengshan Qin, Qiang Zhang, Chen Fang, and Jiangping Hu Superconducting states with broken time-reversal symmetry are rarely found in nature. Here we predict that it is inevitable that the time-reversal symmetry is broken spontaneously in a superconducting Josephson junction formed by two superconductors with different pairing symmetries dubbed as π / 2 -Jo... [Phys. Rev. B 98, 104515] Published Fri Sep 28, 2018

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Proximity-induced superconductivity at nonhelical topological insulator interfaces (2018)

David J. Alspaugh, Mahmoud M. Asmar, Daniel E. Sheehy, and Ilya Vekhter

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-29

Beschreibung: Author(s): David J. Alspaugh, Mahmoud M. Asmar, Daniel E. Sheehy, and Ilya Vekhter We study how nonhelical spin textures at the boundary between a topological insulator (TI) and a superconductor (SC) affect the proximity-induced superconductivity of the TI interface state. We consider TIs coupled to both spin-singlet and spin-triplet SCs, and show that for the spin-triplet parent ... [Phys. Rev. B 98, 104516] Published Fri Sep 28, 2018

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Ab initio effective Hamiltonians for cuprate superconductors (2018)

Motoaki Hirayama, Youhei Yamaji, Takahiro Misawa, and Masatoshi Imada

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-03

Beschreibung: Author(s): Motoaki Hirayama, Youhei Yamaji, Takahiro Misawa, and Masatoshi Imada Ab initio low-energy effective Hamiltonians of two typical high-temperature copper-oxide superconductors, whose mother compounds are La 2 CuO 4 and HgBa 2 CuO 4 , are derived by utilizing the multiscale ab initio scheme for correlated electrons (MACE). The effective Hamiltonians obtained in the present stu... [Phys. Rev. B 98, 134501] Published Tue Oct 02, 2018

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Vortex spin valve on a topological insulator (2018)

Morten Amundsen, Henning G. Hugdal, Asle Sudbø, and Jacob Linder

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-06

Beschreibung: Author(s): Morten Amundsen, Henning G. Hugdal, Asle Sudbø, and Jacob Linder Spin-valve structures are usually associated with the ability to modify the resistance of electrical currents. We here demonstrate a profoundly different effect of a spin-valve. In combination with a topological insulator and superconducting materials, we show that a spin-valve can be used to toggle... [Phys. Rev. B 98, 144505] Published Fri Oct 05, 2018

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Superconductivity of Bi-III phase of elemental bismuth: Insights from muon-spin rotation and density functional theory (2018)

Rustem Khasanov, Hubertus Luetkens, Elvezio Morenzoni, Gediminas Simutis, Stephan Schönecker, Andreas Östlin, Liviu Chioncel, and Alex Amato

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-13

Beschreibung: Author(s): Rustem Khasanov, Hubertus Luetkens, Elvezio Morenzoni, Gediminas Simutis, Stephan Schönecker, Andreas Östlin, Liviu Chioncel, and Alex Amato Using muon-spin rotation the pressure-induced superconductivity in the Bi-III phase of elemental bismuth (transition temperature T c ≃ 7.05 K) was investigated. A Ginzburg-Landau parameter κ = λ / ξ = 30 ( 6 ) ( λ is the magnetic penetration depth, ξ is the coherence length) was estimated, which turns out to be ... [Phys. Rev. B 98, 140504(R)] Published Fri Oct 12, 2018

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Metamorphosis of Andreev bound states into Majorana bound states in pristine nanowires (2018)

Yingyi Huang, Haining Pan, Chun-Xiao Liu, Jay D. Sau, Tudor D. Stanescu, and S. Das Sarma

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-16

Beschreibung: Author(s): Yingyi Huang, Haining Pan, Chun-Xiao Liu, Jay D. Sau, Tudor D. Stanescu, and S. Das Sarma We show theoretically that in the generic finite chemical potential situation, the clean superconducting spin-orbit-coupled nanowire has two distinct nontopological regimes as a function of Zeeman splitting (below the topological quantum phase transition): one is characterized by finite-energy in-ga... [Phys. Rev. B 98, 144511] Published Mon Oct 15, 2018

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Anomalous Josephson effect in S/SO/F/S heterostructures (2018)

M. Minutillo, D. Giuliano, P. Lucignano, A. Tagliacozzo, and G. Campagnano

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-16

Beschreibung: Author(s): M. Minutillo, D. Giuliano, P. Lucignano, A. Tagliacozzo, and G. Campagnano We study the anomalous Josephson effect, as well as the dependence on the direction of the critical Josephson current, in an S/N/S junction, where the normal part is realized by alternating spin-orbit coupled and ferromagnetic layers. We show that to observe these effects it is sufficient to break s... [Phys. Rev. B 98, 144510] Published Mon Oct 15, 2018

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Fermi surface reconstruction in underdoped cuprates: Origin of electron pockets (2018)

Ilya Ivantsov, Alvaro Ferraz, and Evgenii Kochetov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-18

Beschreibung: Author(s): Ilya Ivantsov, Alvaro Ferraz, and Evgenii Kochetov A new phenomenological model is proposed to describe the evolution of the Fermi surface (FS) in a wide range of dopings. It reproduces the key features of the cuprates in the underdoped phase above the superconducting temperature T c . It is shown that the explicit accounting of strong electron correl... [Phys. Rev. B 98, 214511] Published Mon Dec 17, 2018

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Tuning the in-plane Fulde-Ferrell-Larkin-Ovchinnikov state in a superconductor/ferromagnet/normal-metal hybrid structure by current or magnetic field (2018)

P. M. Marychev and D. Yu. Vodolazov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-18

Beschreibung: Author(s): P. M. Marychev and D. Yu. Vodolazov Temperature-induced transition of thin superconductor/ferromagnet/normal-metal (S/F/N) hybrid structure to an in-plane Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state is accompanied by vanishing of effective inverse magnetic field penetration depth Λ − 1 [S. V. Mironov et al. , Phys. Rev. Lett. 121 , 0770... [Phys. Rev. B 98, 214510] Published Mon Dec 17, 2018

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Majorana bound state engineering via efficient real-space parameter optimization (2018)

Samuel Boutin, Julien Camirand Lemyre, and Ion Garate

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-18

Beschreibung: Author(s): Samuel Boutin, Julien Camirand Lemyre, and Ion Garate Recent progress toward the fabrication of Majorana-based qubits has sparked the need for systematic approaches to optimize experimentally relevant parameters for the realization of robust Majorana bound states. Here, we introduce an efficient numerical method for the real-space optimization of tunab... [Phys. Rev. B 98, 214512] Published Mon Dec 17, 2018

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Odd-parity multipole fluctuation and unconventional superconductivity in locally noncentrosymmetric crystal (2018)

Jun Ishizuka and Youichi Yanase

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-18

Beschreibung: Author(s): Jun Ishizuka and Youichi Yanase A microscopic calculation and symmetry argument reveal superconductivity in the vicinity of parity-violating magnetic order. In a crystal structure lacking local space inversion symmetry, an augmented cluster magnetic multipole order may break global inversion symmetry, and therefore it is classifie... [Phys. Rev. B 98, 224510] Published Mon Dec 17, 2018

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Inelastic scattering of microwave radiation in the dynamical Coulomb blockade (2018)

Juha Leppäkangas and Michael Marthaler

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-19

Beschreibung: Author(s): Juha Leppäkangas and Michael Marthaler We study scattering of propagating microwave fields by a dc-voltage-biased Josephson junction. At subgap voltages, a small Josephson junction works merely as a nonlinear boundary that can absorb, amplify, and diversely convert propagating microwaves. In the leading-order perturbation theory of the J... [Phys. Rev. B 98, 224511] Published Tue Dec 18, 2018

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Quasiparticle gaps in multiprobe Majorana nanowires (2018)

Yingyi Huang, Jay D. Sau, Tudor D. Stanescu, and S. Das Sarma

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-19

Beschreibung: Author(s): Yingyi Huang, Jay D. Sau, Tudor D. Stanescu, and S. Das Sarma We theoretically study a spin-orbit-coupled nanowire proximitized by a superconductor in the presence of an externally applied Zeeman field (“Majorana nanowire”) with zero-energy Majorana bound states localized at the two ends of the wire when the Zeeman spin splitting is large enough for the system... [Phys. Rev. B 98, 224512] Published Tue Dec 18, 2018

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Nematic transition and highly two-dimensional superconductivity in ${\mathrm{BaTi}}_{2}{\mathrm{Bi}}_{2}\mathrm{O}$ revealed by $^{209}\mathrm{Bi}$-nuclear magnetic resonance/nuclear quadrupole resonance measurements (2018)

Shunsaku Kitagawa, Kenji Ishida, Wataru Ishii, Takeshi Yajima, and Zenji Hiroi

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-20

Beschreibung: Author(s): Shunsaku Kitagawa, Kenji Ishida, Wataru Ishii, Takeshi Yajima, and Zenji Hiroi In this Rapid Communication, a set of Bi 209 -nuclear magnetic resonance (NMR)/nuclear quadrupole resonance (NQR) measurements has been performed to investigate the physical properties of superconducting (SC) BaTi 2 Bi 2 O from a microscopic point of view. The NMR and NQR spectra at 5 K can be reproduced ... [Phys. Rev. B 98, 220507(R)] Published Wed Dec 19, 2018

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Decay of plasmonic waves in Josephson junction chains (2018)

M. Bard, I. V. Protopopov, and A. D. Mirlin

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-20

Beschreibung: Author(s): M. Bard, I. V. Protopopov, and A. D. Mirlin We study the damping of plasma waves in linear Josephson junction chains as well as in two capacitively coupled chains. In the parameter regime where the ground capacitance can be neglected, the theory of the antisymmetric mode in the double chain can be mapped onto the theory of a single chain. We ... [Phys. Rev. B 98, 224513] Published Wed Dec 19, 2018

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Observation of interface superconductivity in a ${\mathrm{SnSe}}_{2}$/epitaxial graphene van der Waals heterostructure (2018)

Yi-Min Zhang, Jia-Qi Fan, Wen-Lin Wang, Ding Zhang, Lili Wang, Wei Li, Ke He, Can-Li Song, Xu-Cun Ma, and Qi-Kun Xue

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-20

Beschreibung: Author(s): Yi-Min Zhang, Jia-Qi Fan, Wen-Lin Wang, Ding Zhang, Lili Wang, Wei Li, Ke He, Can-Li Song, Xu-Cun Ma, and Qi-Kun Xue A van der Waals heterostructure composed of graphitized SiC(0001) and the semiconductor SnSe 2 shows conventional BCS-type superconductivity that is firmly corroborated by the presence of quantized vortices under an external magnetic field. Interface engineering has revealed that the observed superconductivity originates from a two-dimensional electron gas confined to the very interface between SnSe 2 and graphene. [Phys. Rev. B 98, 220508(R)] Published Wed Dec 19, 2018

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Unconventional order parameter induced by helical chiral molecules adsorbed on a metal proximity coupled to a superconductor (2018)

Tamar Shapira, Hen Alpern, Shira Yochelis, Ting-Kuo Lee, Chao-Cheng Kaun, Yossi Paltiel, Gad Koren, and Oded Millo

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-21

Beschreibung: Author(s): Tamar Shapira, Hen Alpern, Shira Yochelis, Ting-Kuo Lee, Chao-Cheng Kaun, Yossi Paltiel, Gad Koren, and Oded Millo Following our previous results, which provide evidence for the emergence of a chiral p-wave triplet-pairing component in superconducting Nb upon the adsorption of chiral molecules, we turned to investigate whether such an effect can take place in a proximal superconductor consisting of metal on supe... [Phys. Rev. B 98, 214513] Published Thu Dec 20, 2018

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Induced energy gap in finite-sized superconductor/ferromagnet hybrids (2018)

Klaus Halterman and Mohammad Alidoust

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-23

Beschreibung: Author(s): Klaus Halterman and Mohammad Alidoust We theoretically study self-consistent proximity effects in finite-sized systems consisting of ferromagnet (F) layers coupled to an s -wave superconductor (S). We consider both SF 1 F 2 and SH nanostructures, where the F 1 F 2 bilayers are uniformly magnetized and the ferromagnetic H layer possesses a heli... [Phys. Rev. B 98, 134510] Published Mon Oct 22, 2018

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Preformed pairs in flat Bloch bands (2018)

Murad Tovmasyan, Sebastiano Peotta, Long Liang, Päivi Törmä, and Sebastian D. Huber

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-26

Beschreibung: Author(s): Murad Tovmasyan, Sebastiano Peotta, Long Liang, Päivi Törmä, and Sebastian D. Huber In a flat Bloch band, the kinetic energy is quenched and single particles cannot propagate since they are localized due to destructive interference. Whether this remains true in the presence of interactions is a challenging question because a flat dispersion usually leads to highly correlated ground... [Phys. Rev. B 98, 134513] Published Thu Oct 25, 2018

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Signatures of nodeless multiband superconductivity and particle-hole crossover in the vortex cores of ${\mathrm{FeTe}}_{0.55}{\mathrm{Se}}_{0.45}$ (2018)

Christophe Berthod

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-26

Beschreibung: Author(s): Christophe Berthod Scanning tunneling experiments on single crystals of superconducting FeTe 0.55 Se 0.45 have recently provided evidence for discrete energy levels inside vortices. Although predicted long ago, such levels are seldom resolved due to extrinsic (temperature, instrumentation) and intrinsic (quasiparticle sc... [Phys. Rev. B 98, 144519] Published Thu Oct 25, 2018

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Suppression of antiferromagnetic spin fluctuations in superconducting ${\mathrm{Cr}}_{0.8}{\mathrm{Ru}}_{0.2}$ (2018)

M. Ramazanoglu, B. G. Ueland, D. K. Pratt, L. W. Harriger, J. W. Lynn, G. Ehlers, G. E. Granroth, S. L. Bud'ko, P. C. Canfield, D. L. Schlagel, A. I. Goldman, T. A. Lograsso, and R. J. McQueeney

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-26

Beschreibung: Author(s): M. Ramazanoglu, B. G. Ueland, D. K. Pratt, L. W. Harriger, J. W. Lynn, G. Ehlers, G. E. Granroth, S. L. Bud'ko, P. C. Canfield, D. L. Schlagel, A. I. Goldman, T. A. Lograsso, and R. J. McQueeney Unconventional superconductivity (SC) often develops in magnetic metals on the cusp of static antiferromagnetic (AFM) order where spin fluctuations are strong. This association is so compelling that many SC materials are labeled as unconventional by proximity to an ordered AFM state. The Cr-Ru alloy... [Phys. Rev. B 98, 134512] Published Thu Oct 25, 2018

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Multigap anisotropic superconductivity in borophenes (2018)

Yinchang Zhao, Shuming Zeng, Chao Lian, Zhenhong Dai, Sheng Meng, and Jun Ni

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-27

Beschreibung: Author(s): Yinchang Zhao, Shuming Zeng, Chao Lian, Zhenhong Dai, Sheng Meng, and Jun Ni We use ab initio anisotropic Migdal-Eliashberg formalism to examine the pairing mechanism and the nature of the superconducting gaps in experimentally fabricated borophenes. Our results indicate that the superconducting transition is dominated by a standard phonon-mediated mechanism, and multiple an... [Phys. Rev. B 98, 134514] Published Fri Oct 26, 2018

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Influence of diffuse surface scattering on the stability of superconducting phases with spontaneous surface current generated by Andreev bound states (2018)

Nobumi Miyawaki and Seiji Higashitani

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-31

Beschreibung: Author(s): Nobumi Miyawaki and Seiji Higashitani We report a theoretical study on the phase transition between superconducting states with and without spontaneous surface current. The phase transition takes place due to the formation of surface Andreev bound states in unconventional superconductors. Based on the quasiclassical theory of supercondu... [Phys. Rev. B 98, 134516] Published Tue Oct 30, 2018

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Scale invariance as the cause of the superconducting dome in the cuprates (2018)

Zhidong Leong, Kridsanaphong Limtragool, Chandan Setty, and Philip W. Phillips

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-02

Beschreibung: Author(s): Zhidong Leong, Kridsanaphong Limtragool, Chandan Setty, and Philip W. Phillips Recent photoemission spectroscopy measurements (T. J. Reber et al. , arXiv:1509.01611 ) of cuprate superconductors have inferred that the self-energy exhibits critical scaling over an extended doping regime, thereby calling into question the conventional wisdom that critical scaling exists only at iso... [Phys. Rev. B 98, 184501] Published Thu Nov 01, 2018

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Fraunhofer response and supercurrent spin switching in black phosphorus with strain and disorder (2018)

Mohammad Alidoust, Morten Willatzen, and Antti-Pekka Jauho

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-10

Beschreibung: Author(s): Mohammad Alidoust, Morten Willatzen, and Antti-Pekka Jauho We develop theory models for both ballistic and disordered superconducting monolayer black phosphorus devices in the presence of magnetic exchange field and stress. The ballistic case is studied through a microscopic Bogoliubov–de Gennes formalism, while for the disordered case we formulate a quasic... [Phys. Rev. B 98, 184505] Published Fri Nov 09, 2018

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Aharonov-Bohm and Aharonov-Casher effects in a double quantum dot Josephson junction (2018)

Damian Tomaszewski, Piotr Busz, Rosa López, Rok Žitko, Minchul Lee, and Jan Martinek

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-15

Beschreibung: Author(s): Damian Tomaszewski, Piotr Busz, Rosa López, Rok Žitko, Minchul Lee, and Jan Martinek We analyze a Josephson junction between two superconductors interconnected through a normal-state nanostructure made of two parallel nanowires with embedded quantum dots. We study the influence of interference effects due to the Aharonov-Bohm (AB) and Aharonov-Casher (AC) phases for local and nonloc... [Phys. Rev. B 98, 174504] Published Wed Nov 14, 2018

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Fluxon-based quantum simulation in circuit QED (2018)

Alexandru Petrescu, Hakan E. Türeci, Alexey V. Ustinov, and Ioan M. Pop

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-16

Beschreibung: Author(s): Alexandru Petrescu, Hakan E. Türeci, Alexey V. Ustinov, and Ioan M. Pop Long-lived fluxon excitations can be trapped inside a superinductor ring, which is divided into an array of loops by a periodic sequence of Josephson junctions in the quantum regime, thereby allowing fluxons to tunnel between neighboring sites. By tuning the Josephson couplings and, implicitly, the ... [Phys. Rev. B 98, 174505] Published Thu Nov 15, 2018

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Direct spectroscopic evidence for mixed-valence Tl in the low carrier-density superconductor ${\mathrm{Pb}}_{1−x}{\mathrm{Tl}}_{x}\mathrm{Te}$ (2018)

P. Walmsley, C. Liu, A. D. Palczewski, P. Giraldo-Gallo, C. G. Olson, I. R. Fisher, and A. Kaminski

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-16

Beschreibung: Author(s): P. Walmsley, C. Liu, A. D. Palczewski, P. Giraldo-Gallo, C. G. Olson, I. R. Fisher, and A. Kaminski Upon doping with Tl the narrow band-gap semiconductor PbTe exhibits anomalously high-temperature superconductivity despite a very low carrier-density as well as signatures of the Kondo effect despite an absence of magnetic moments. These phenomena have been explained by invoking 2 e fluctuations of t... [Phys. Rev. B 98, 184506] Published Thu Nov 15, 2018

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Residual spin susceptibility in the spin-triplet orbital-singlet model (2018)

Yue Yu, Alfred K. C. Cheung, S. Raghu, and D. F. Agterberg

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-16

Beschreibung: Author(s): Yue Yu, Alfred K. C. Cheung, S. Raghu, and D. F. Agterberg Nuclear magnetic resonance and Knight shift measurements are critical tools in the identification of spin-triplet superconductors. We discuss the effects of spin-orbit coupling on the Knight shift and susceptibilities for a variety of spin triplet multi-orbital gap functions with orbital-singlet cha... [Phys. Rev. B 98, 184507] Published Thu Nov 15, 2018

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Enhancing superconductivity by disorder (2018)

Maria N. Gastiasoro and Brian M. Andersen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-20

Beschreibung: Author(s): Maria N. Gastiasoro and Brian M. Andersen We study two mechanisms for enhancing the superconducting mean-field transition temperature T c by nonmagnetic disorder in both conventional (sign-preserving gaps) and unconventional (sign-changing gaps) superconductors (SCs). In the first scenario, relevant to multiband systems of both conventional ... [Phys. Rev. B 98, 184510] Published Mon Nov 19, 2018

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Nanocalorimetric evidence for nematic superconductivity in the doped topological insulator ${\mathrm{Sr}}_{0.1}{\mathrm{Bi}}_{2}{\mathrm{Se}}_{3}$ (2018)

Kristin Willa, Roland Willa, Kok Wee Song, G. D. Gu, John A. Schneeloch, Ruidan Zhong, Alexei E. Koshelev, Wai-Kwong Kwok, and Ulrich Welp

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-20

Beschreibung: Author(s): Kristin Willa, Roland Willa, Kok Wee Song, G. D. Gu, John A. Schneeloch, Ruidan Zhong, Alexei E. Koshelev, Wai-Kwong Kwok, and Ulrich Welp Spontaneous rotational-symmetry breaking in the superconducting state of doped Bi 2 Se 3 has attracted significant attention as an indicator for topological superconductivity. In this paper, high-resolution calorimetry of the single-crystal Sr 0.1 Bi 2 Se 3 provides unequivocal evidence of a twofold rotatio... [Phys. Rev. B 98, 184509] Published Mon Nov 19, 2018

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Superconductivity arising from layer differentiation in multilayer cuprates (2018)

Kazutaka Nishiguchi, Shingo Teranishi, Koichi Kusakabe, and Hideo Aoki

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-22

Beschreibung: Author(s): Kazutaka Nishiguchi, Shingo Teranishi, Koichi Kusakabe, and Hideo Aoki In order to theoretically identify the factors governing superconductivity in multilayer cuprates, a three-layer Hubbard model is studied with the two-particle self-consistent (TPSC) approach so as to incorporate electron correlations. The linearized Eliashberg equation is then solved for the gap fu... [Phys. Rev. B 98, 174508] Published Wed Nov 21, 2018

Schlagwort(e): Superfluidity and superconductivity

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Superconductivity in the metastable $1{T}^{′}$ and $1{T}^{′″}$ phases of $\mathrm{Mo}{\mathrm{S}}_{2}$ crystals (2018)

C. Shang, Y. Q. Fang, Q. Zhang, N. Z. Wang, Y. F. Wang, Z. Liu, B. Lei, F. B. Meng, L. K. Ma, T. Wu, Z. F. Wang, C. G. Zeng, F. Q. Huang, Z. Sun, and X. H. Chen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-22

Beschreibung: Author(s): C. Shang, Y. Q. Fang, Q. Zhang, N. Z. Wang, Y. F. Wang, Z. Liu, B. Lei, F. B. Meng, L. K. Ma, T. Wu, Z. F. Wang, C. G. Zeng, F. Q. Huang, Z. Sun, and X. H. Chen Transition-metal dichalcogenides open novel opportunities for the exploration of exciting new physics and devices. As a representative system, 2 H -Mo S 2 has been extensively investigated owing to its unique band structure with a large band gap, degenerate valleys, and nonzero Berry curvature. However,... [Phys. Rev. B 98, 184513] Published Wed Nov 21, 2018

Schlagwort(e): Superfluidity and superconductivity

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Josephson critical currents in annular superconductors with Pearl vortices (2018)

A. Badía-Majós

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-29

Beschreibung: Author(s): A. Badía-Majós We investigate the influence of Pearl vortices in the vicinity of an edge-type Josephson junction for a superconducting thin-film loop in the form of an annulus, under uniform magnetic field. Specifically, we obtain the exact analytic formulation that allows one to describe the circulating current d... [Phys. Rev. B 98, 184518] Published Wed Nov 28, 2018

Schlagwort(e): Superfluidity and superconductivity

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Superconductivity in systems exhibiting the Altshuler-Aronov anomaly (2018)

Branislav Rabatin and Richard Hlubina

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In: Physical Review B

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Publikationsdatum: 2018-11-30

Beschreibung: Author(s): Branislav Rabatin and Richard Hlubina Making use of generalized Eliashberg equations, we describe the Altshuler-Aronov (AA) effect and superconductivity on equal footing. We derive explicit expressions for the Coulomb pseudopotential in 3D, taking into account also the anomalous diffusion. We present a full numerical solution for two no... [Phys. Rev. B 98, 184519] Published Thu Nov 29, 2018

Schlagwort(e): Superfluidity and superconductivity

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Negative electronic compressibility and nanoscale inhomogeneity in ionic-liquid gated two-dimensional superconductors (2018)

G. Dezi, N. Scopigno, S. Caprara, and M. Grilli

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-11

Beschreibung: Author(s): G. Dezi, N. Scopigno, S. Caprara, and M. Grilli When the electron density of highly crystalline thin films is tuned by chemical doping or ionic-liquid gating, interesting effects appear including unconventional superconductivity, sizable spin-orbit coupling, competition with charge-density waves, and a debated low-temperature metallic state that ... [Phys. Rev. B 98, 214507] Published Mon Dec 10, 2018

Schlagwort(e): Superfluidity and superconductivity

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Superconducting properties of the noncentrosymmetric superconductor LaPtGe (2018)

Sajilesh K. P., D. Singh, P. K. Biswas, A. D. Hillier, and R. P. Singh

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-11

Beschreibung: Author(s): Sajilesh K. P., D. Singh, P. K. Biswas, A. D. Hillier, and R. P. Singh We report on the superconducting properties of noncentrosymmetric superconductor LaPtGe, which crystallizes in noncentrosymmetric α − ThSi 2 structure. The magnetization, resistivity, and specific-heat measurements confirm that LaPtGe is a type-II bulk superconductor with a transition temperature T c = 3.... [Phys. Rev. B 98, 214505] Published Mon Dec 10, 2018

Schlagwort(e): Superfluidity and superconductivity

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Two distinct superconducting phases and pressure-induced crossover from type-II to type-I superconductivity in the spin-orbit-coupled superconductors $\mathrm{BaB}{\mathrm{i}}_{3}$ and $\mathrm{SrB}{\mathrm{i}}_{3}$ (2018)

Bosen Wang, Xuan Luo, Kento Ishigaki, Kazuyuki Matsubayashi, Jinguang Cheng, Yuping Sun, and Yoshiya Uwatoko

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-13

Beschreibung: Author(s): Bosen Wang, Xuan Luo, Kento Ishigaki, Kazuyuki Matsubayashi, Jinguang Cheng, Yuping Sun, and Yoshiya Uwatoko We report two distinct superconducting states with different crystal structures and a crossover from a type-II to a type-I superconductor (SC) in ( Ba , Sr ) B i 3 . The superconducting parameters are revealed to classify two SCs: BaB i 3 is in the weak-coupling limit on the basis of Δ C / γ n T c ∼ 0.67 and 2 Δ / k B T c ∼ ... [Phys. Rev. B 98, 220506(R)] Published Wed Dec 12, 2018

Schlagwort(e): Superfluidity and superconductivity

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Bogoliubov Fermi surfaces: General theory, magnetic order, and topology (2018)

P. M. R. Brydon, D. F. Agterberg, Henri Menke, and C. Timm

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-15

Beschreibung: Author(s): P. M. R. Brydon, D. F. Agterberg, Henri Menke, and C. Timm The authors present a general theory for Fermi surfaces of Bogoliubov quasiparticles in superconductors with broken time-reversal symmetry. These Fermi surfaces form two-dimensional nodes of the superconducting gap, which are unique to pairing states with a “nonunitary” structure. This generates a nonsuperconducting magnetic order intertwined with superconductivity, which is responsible for inflating the expected zero- or one-dimensional nodes into Bogoliubov Fermi surfaces. Such Fermi surfaces should be present in a large class of superconductors that break time-reversal symmetry. [Phys. Rev. B 98, 224509] Published Fri Dec 14, 2018

Schlagwort(e): Superfluidity and superconductivity

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Local impedance on a rough surface of a chiral $p$-wave superconductor (2018)

S. V. Bakurskiy, Ya. V. Fominov, A. F. Shevchun, Y. Asano, Y. Tanaka, M. Yu. Kupriyanov, A. A. Golubov, M. R. Trunin, H. Kashiwaya, S. Kashiwaya, and Y. Maeno

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-19

Beschreibung: Author(s): S. V. Bakurskiy, Ya. V. Fominov, A. F. Shevchun, Y. Asano, Y. Tanaka, M. Yu. Kupriyanov, A. A. Golubov, M. R. Trunin, H. Kashiwaya, S. Kashiwaya, and Y. Maeno We develop a self-consistent approach for calculating the local impedance at a rough surface of a chiral p -wave superconductor. Using the quasiclassical Eilenberger-Larkin-Ovchinnikov formalism, we numerically find the pair potential, pairing functions, and the surface density of states taking into ... [Phys. Rev. B 98, 134508] Published Thu Oct 18, 2018

Schlagwort(e): Superfluidity and superconductivity

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