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Interplay of Driving and Frequency Noise in the Spectra of Vibrational Systems (2014)

Yaxing Zhang, J. Moser, J. Güttinger, A. Bachtold, and M. I. Dykman

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-17

Beschreibung: Author(s): Yaxing Zhang, J. Moser, J. Güttinger, A. Bachtold, and M. I. Dykman We study the spectral effect of the fluctuations of the vibration frequency. Such fluctuations play a major role in nanomechanical and other mesoscopic vibrational systems. We find that, for periodically driven systems, the interplay of the driving and frequency fluctuations results in specific spec... [Phys. Rev. Lett. 113, 255502] Published Tue Dec 16, 2014

Schlagwort(e): Condensed Matter: Structure, etc.

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Digitale ISSN: 1079-7114

Thema: Physik

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Many-Body Dynamics of Dipolar Molecules in an Optical Lattice (2014)

Kaden R. A. Hazzard, Bryce Gadway, Michael Foss-Feig, Bo Yan, Steven A. Moses, Jacob P. Covey, Norman Y. Yao, Mikhail D. Lukin, Jun Ye, Deborah S. Jin, and Ana Maria Rey

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-08

Beschreibung: Author(s): Kaden R. A. Hazzard, Bryce Gadway, Michael Foss-Feig, Bo Yan, Steven A. Moses, Jacob P. Covey, Norman Y. Yao, Mikhail D. Lukin, Jun Ye, Deborah S. Jin, and Ana Maria Rey We use Ramsey spectroscopy to experimentally probe the quantum dynamics of disordered dipolar-interacting ultracold molecules in a partially filled optical lattice, and we compare the results to theory. We report the capability to control the dipolar interaction strength. We find excellent agreement... [Phys. Rev. Lett. 113, 195302] Published Fri Nov 07, 2014

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Making the Cut: Lattice Kirigami Rules (2014)

Toen Castle, Yigil Cho, Xingting Gong, Euiyeon Jung, Daniel M. Sussman, Shu Yang, and Randall D. Kamien

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-12

Beschreibung: Author(s): Toen Castle, Yigil Cho, Xingting Gong, Euiyeon Jung, Daniel M. Sussman, Shu Yang, and Randall D. Kamien Simple rules for cutting and folding rigid sheets can facilitate preplanned material design. [Phys. Rev. Lett. 113, 245502] Published Thu Dec 11, 2014

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Structural Relaxation is a Scale-Free Process (2014)

Anaël Lemaître

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-12

Beschreibung: Author(s): Anaël Lemaître We show that in deeply supercooled liquids, structural relaxation proceeds via the accumulation of Eshelby events, i.e. local rearrangements that create long-ranged and anisotropic stresses in the surrounding medium. Such events must be characterized using tensorial observables and we construct an a... [Phys. Rev. Lett. 113, 245702] Published Thu Dec 11, 2014

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Scaling Shift in Multicracked Fiber Bundles (2014)

Fabio Manca, Stefano Giordano, Pier Luca Palla, and Fabrizio Cleri

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-17

Beschreibung: Author(s): Fabio Manca, Stefano Giordano, Pier Luca Palla, and Fabrizio Cleri Bundles of fibers, wires, or filaments are ubiquitous structures in both natural and artificial materials. We investigate the bundle degradation induced by an external damaging action through a theoretical model describing an assembly of parallel fibers, progressively damaged by a random population ... [Phys. Rev. Lett. 113, 255501] Published Tue Dec 16, 2014

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Coherent and Incoherent Electron-Phonon Coupling in Graphite Observed with Radio-Frequency Compressed Ultrafast Electron Diffraction (2014)

Robert P. Chatelain, Vance R. Morrison, Bart L. M. Klarenaar, and Bradley J. Siwick

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-02

Beschreibung: Author(s): Robert P. Chatelain, Vance R. Morrison, Bart L. M. Klarenaar, and Bradley J. Siwick Ultrafast electron diffraction experiments probe, in real time, how electrons couple to lattice vibrations in graphite. [Phys. Rev. Lett. 113, 235502] Published Mon Dec 01, 2014

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Direct Observation of Magnetochiral Effects through a Single Metamolecule in Microwave Regions (2014)

Satoshi Tomita, Kei Sawada, Andrey Porokhnyuk, and Tetsuya Ueda

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-04

Beschreibung: Author(s): Satoshi Tomita, Kei Sawada, Andrey Porokhnyuk, and Tetsuya Ueda We report direct observation of magnetochiral (MCh) effects for the X-band microwaves through a single metamolecule consisting of a copper chiral structure and ferrite rod. A fictitious interaction between chirality and magnetism is realized in the metamolecule without intrinsic electronic interacti... [Phys. Rev. Lett. 113, 235501] Published Wed Dec 03, 2014

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Nonclassical “Explosive” Nucleation in Pb/Si(111) at Low Temperatures (2014)

M. T. Hershberger, M. Hupalo, P. A. Thiel, C. Z. Wang, K. M. Ho, and M. C. Tringides

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-04

Beschreibung: Author(s): M. T. Hershberger, M. Hupalo, P. A. Thiel, C. Z. Wang, K. M. Ho, and M. C. Tringides Classically, the onset of nucleation is defined in terms of a critical cluster of the condensed phase, which forms from the gradual aggregation of randomly diffusing adatoms. Experiments in Pb/Si(111) at low temperature have discovered a dramatically different type of nucleation, with perfect crysta... [Phys. Rev. Lett. 113, 236101] Published Wed Dec 03, 2014

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Superamphiphobic Particles: How Small Can We Go? (2014)

Ming Ye, Xu Deng, Javed Ally, Periklis Papadopoulos, Frank Schellenberger, Doris Vollmer, Michael Kappl, and Hans-Jürgen Butt

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-11

Beschreibung: Author(s): Ming Ye, Xu Deng, Javed Ally, Periklis Papadopoulos, Frank Schellenberger, Doris Vollmer, Michael Kappl, and Hans-Jürgen Butt Water and oil repellent coatings—so-called superamphiphobic coatings—greatly reduce the interaction between a liquid and a solid. So far, only flat or weakly curved superhydrophobic and superamphiphobic surfaces have been designed. This raises the question of whether highly curved structures or micr... [Phys. Rev. Lett. 112, 016101] Published Fri Jan 10, 2014

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Quantum and Thermal Dispersion Forces: Application to Graphene Nanoribbons (2014)

D. Drosdoff and Lilia M. Woods

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-15

Beschreibung: Author(s): D. Drosdoff and Lilia M. Woods The van der Waals dispersion force between graphene nanoribbons is investigated. For this purpose, a nonretarded Lifshitz-like formula for parallel 1D systems is presented within the random phase approximation. Using the response properties of the ribbons from a tight binding model, it is found that... [Phys. Rev. Lett. 112, 025501] Published Tue Jan 14, 2014

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Encoding of Memory in Sheared Amorphous Solids (2014)

Davide Fiocco, Giuseppe Foffi, and Srikanth Sastry

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-16

Beschreibung: Author(s): Davide Fiocco, Giuseppe Foffi, and Srikanth Sastry We show that memory can be encoded in a model amorphous solid subjected to athermal oscillatory shear deformations, and in an analogous spin model with disordered interactions, sharing the feature of a deformable energy landscape. When these systems are subjected to oscillatory shear deformation, th... [Phys. Rev. Lett. 112, 025702] Published Wed Jan 15, 2014

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12

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Role of Disorder in the Thermodynamics and Atomic Dynamics of Glasses (2014)

A. I. Chumakov, G. Monaco, A. Fontana, A. Bosak, R. P. Hermann, D. Bessas, B. Wehinger, W. A. Crichton, M. Krisch, R. Rüffer, G. Baldi, G. Carini Jr., G. Carini, G. D’Angelo, E. Gilioli, G. Tripodo, M. Zanatta, B. Winkler, V. Milman, K. Refson, M. T. Dove, N. Dubrovinskaia, L. Dubrovinsky, R. Keding, and Y. Z. Yue

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-16

Beschreibung: Author(s): A. I. Chumakov, G. Monaco, A. Fontana, A. Bosak, R. P. Hermann, D. Bessas, B. Wehinger, W. A. Crichton, M. Krisch, R. Rüffer, G. Baldi, G. Carini Jr., G. Carini, G. D’Angelo, E. Gilioli, G. Tripodo, M. Zanatta, B. Winkler, V. Milman, K. Refson, M. T. Dove, N. Dubrovinskaia, L. Dubrovinsky, R. Keding, and Y. Z. Yue We measured the density of vibrational states (DOS) and the specific heat of various glassy and crystalline polymorphs of SiO2. The typical (ambient) glass shows a well-known excess of specific heat relative to the typical crystal (α-quartz). This, however, holds when comparing a lower-density glass... [Phys. Rev. Lett. 112, 025502] Published Wed Jan 15, 2014

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Quantized Superfluid Vortex Rings in the Unitary Fermi Gas (2014)

Aurel Bulgac, Michael McNeil Forbes, Michelle M. Kelley, Kenneth J. Roche, and Gabriel Wlazłowski

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-17

Beschreibung: Author(s): Aurel Bulgac, Michael McNeil Forbes, Michelle M. Kelley, Kenneth J. Roche, and Gabriel Wlazłowski In a recent article, Yefsah et al. [Nature (London) 499 , 426 (2013)] report the observation of an unusual excitation in an elongated harmonically trapped unitary Fermi gas. After phase imprinting a domain wall, they observe oscillations almost an order of magnitude slower than predicted by any theor... [Phys. Rev. Lett. 112, 025301] Published Thu Jan 16, 2014

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Self-Doping of Ultrathin Insulating Films by Transition Metal Atoms (2014)

Z. Li, H.-Y. T. Chen, K. Schouteden, K. Lauwaet, L. Giordano, M. I. Trioni, E. Janssens, V. Iancu, C. Van Haesendonck, P. Lievens, and G. Pacchioni

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-17

Beschreibung: Author(s): Z. Li, H.-Y. T. Chen, K. Schouteden, K. Lauwaet, L. Giordano, M. I. Trioni, E. Janssens, V. Iancu, C. Van Haesendonck, P. Lievens, and G. Pacchioni Single magnetic Co atoms are deposited on atomically thin NaCl films on Au(111). Two different adsorption sites are revealed by high-resolution scanning tunneling microscopy (STM), i.e., at Na and at Cl locations. Using density functional based simulations of the STM images, we show that the Co atom... [Phys. Rev. Lett. 112, 026102] Published Thu Jan 16, 2014

Schlagwort(e): Condensed Matter: Structure, etc.

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Quantum Simulation of Landau-Zener Model Dynamics Supporting the Kibble-Zurek Mechanism (2014)

Xiao-Ye Xu, Yong-Jian Han, Kai Sun, Jin-Shi Xu, Jian-Shun Tang, Chuan-Feng Li, and Guang-Can Guo

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-24

Beschreibung: Author(s): Xiao-Ye Xu, Yong-Jian Han, Kai Sun, Jin-Shi Xu, Jian-Shun Tang, Chuan-Feng Li, and Guang-Can Guo The Kibble-Zurek mechanism (KZM) captures the key physics of nonequilibrium dynamics in second order phase transitions, and accurately predicts the density of topological defects formed in such processes. However, the central prediction of KZM—i.e., the scaling of the density of defects with the que... [Phys. Rev. Lett. 112, 035701] Published Thu Jan 23, 2014

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16

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Adsorbate Electric Fields on a Cryogenic Atom Chip (2014)

K. S. Chan, M. Siercke, C. Hufnagel, and R. Dumke

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-15

Beschreibung: Author(s): K. S. Chan, M. Siercke, C. Hufnagel, and R. Dumke We investigate the behavior of electric fields originating from adsorbates deposited on a cryogenic atom chip as it is cooled from room temperature to cryogenic temperature. Using Rydberg electromagnetically induced transparency, we measure the field strength versus distance from a 1 mm square of yt... [Phys. Rev. Lett. 112, 026101] Published Tue Jan 14, 2014

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17

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Direct Evidence for Local Symmetry Breaking during a Strain Glass Transition (2014)

Yumei Zhou, Dezhen Xue, Ya Tian, Xiangdong Ding, Shengwu Guo, Kazuhiro Otsuka, Jun Sun, and Xiaobing Ren

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-17

Beschreibung: Author(s): Yumei Zhou, Dezhen Xue, Ya Tian, Xiangdong Ding, Shengwu Guo, Kazuhiro Otsuka, Jun Sun, and Xiaobing Ren Strain glass transition is a unique nanoscale displacive transition with local symmetry breaking while maintaining the macroscopic symmetry or average structure unchanged. It usually occurs in the “nonmartensitic” composition range of a martensitic system. So far, only indirect evidence exists for s... [Phys. Rev. Lett. 112, 025701] Published Thu Jan 16, 2014

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Transitions of Bc→ψ(1S,2S) and the modified harmonic oscillator wave function in the light front quark model (2014)

Hong-Wei Ke, Tan Liu, and Xue-Qian Li

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2014-01-23

Beschreibung: Author(s): Hong-Wei Ke, Tan Liu, and Xue-Qian Li The LHCb Collaboration has systematically measured the rates of Bc→J/ψK, Bc→J/ψDs, Bc→J/ψDs*, and Bc→ψ(2S)π. The new data enable us to study relevant theoretical models and further determine the model parameters. In this work, we calculate the form factors for the transitions Bc→J/ψ and Bc→ψ(2S) num... [Phys. Rev. D 89, 017501] Published Tue Jan 21, 2014

Schlagwort(e): Strong interactions & Lattice methods

Print ISSN: 0556-2821

Digitale ISSN: 1089-4918

Thema: Physik

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Discontinuities in the First and Second Sound Velocities at the Berezinskii-Kosterlitz-Thouless Transition (2014)

Tomoki Ozawa and Sandro Stringari

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-15

Beschreibung: Author(s): Tomoki Ozawa and Sandro Stringari We calculate the temperature dependence of the first and second sound velocities in the superfluid phase of a 2D dilute Bose gas by solving Landau’s two fluid hydrodynamic equations. We predict the occurrence of a significant discontinuity in both velocities at the critical temperature, as a consequ... [Phys. Rev. Lett. 112, 025302] Published Tue Jan 14, 2014

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Entropically Stabilized Dislocations (2014)

Woo Kyun Kim and Ellad B. Tadmor

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-11

Beschreibung: Author(s): Woo Kyun Kim and Ellad B. Tadmor Dislocations are line defects that play a key role in the plasticity of crystalline materials and affect their thermal, chemical, and electrical properties. Typically dislocations are treated as stable defects; e.g., the equilibrium core structure of a dislocation is obtained by minimizing the cryst... [Phys. Rev. Lett. 112, 105501] Published Mon Mar 10, 2014

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Stabilization Mechanism of ZnO Nanoparticles by Fe Doping (2014)

Jianping Xiao, Agnieszka Kuc, Thomas Frauenheim, and Thomas Heine

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-11

Beschreibung: Author(s): Jianping Xiao, Agnieszka Kuc, Thomas Frauenheim, and Thomas Heine Surprisingly low solubility and toxicity of Fe-doped ZnO nanoparticles is elucidated on the basis of first-principles calculations. Various ZnO surfaces that could be present in nanoparticles are subject to substitutional Fe doping. We show that Fe stabilizes polar instable surfaces, while nonpolar ... [Phys. Rev. Lett. 112, 106102] Published Mon Mar 10, 2014

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Microscopic Origin and Universality Classes of the Efimov Three-Body Parameter (2014)

Pascal Naidon, Shimpei Endo, and Masahito Ueda

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-11

Beschreibung: Author(s): Pascal Naidon, Shimpei Endo, and Masahito Ueda The low-energy spectrum of three particles interacting via nearly resonant two-body interactions in the Efimov regime is set by the so-called three-body parameter. We show that the three-body parameter is essentially determined by the zero-energy two-body correlation. As a result, we identify two cl... [Phys. Rev. Lett. 112, 105301] Published Mon Mar 10, 2014

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Physical Adsorption: Theory of van der Waals Interactions between Particles and Clean Surfaces (2014)

Jianmin Tao and Andrew M. Rappe

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-11

Beschreibung: Author(s): Jianmin Tao and Andrew M. Rappe van der Waals (vdW) interactions between particles and surfaces are critical for the study of physical adsorption. In this work, we develop a method to calculate the leading- and higher-order coefficients, describing the dependence of vdW interaction on height above the surface. We find that the pro... [Phys. Rev. Lett. 112, 106101] Published Mon Mar 10, 2014

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Kinetics of Nanobubble Generation Around Overheated Nanoparticles (2014)

Julien Lombard, Thierry Biben, and Samy Merabia

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-13

Beschreibung: Author(s): Julien Lombard, Thierry Biben, and Samy Merabia We report on the formation and growth of nanobubbles around laser-heated gold nanoparticles in water. Using a hydrodynamic free-energy model, we show that the temporal evolution of the nanobubble radius is asymmetrical: the expansion is found to be adiabatic, while the collapse is best described by ... [Phys. Rev. Lett. 112, 105701] Published Wed Mar 12, 2014

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Soft Modes and Nonaffine Rearrangements in the Inherent Structures of Supercooled Liquids (2014)

Majid Mosayebi, Patrick Ilg, Asaph Widmer-Cooper, and Emanuela Del Gado

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-14

Beschreibung: Author(s): Majid Mosayebi, Patrick Ilg, Asaph Widmer-Cooper, and Emanuela Del Gado We find that the hierarchical organization of the potential energy landscape in a model supercooled liquid can be related to a change in the spatial distribution of soft normal modes. For groups of nearby minima, between which fast relaxation processes typically occur, the localization of the soft m... [Phys. Rev. Lett. 112, 105503] Published Thu Mar 13, 2014

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Tuning Ideal Tensile Strengths and Intrinsic Ductility of bcc Refractory Alloys (2014)

Liang Qi and D. C. Chrzan

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-20

Beschreibung: Author(s): Liang Qi and D. C. Chrzan An important theoretical ductility criterion for group V and VI metal-based refractory alloys in body-centered cubic (bcc) lattices is the mechanical failure mode of their perfect crystals under tension along the weakest direction [100]. Pure Mo and W fail by cleavage and are deemed intrinsically br... [Phys. Rev. Lett. 112, 115503] Published Wed Mar 19, 2014

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Quantum Tricriticality at the Superfluid-Insulator Transition of Binary Bose Mixtures (2014)

Yasuyuki Kato, Daisuke Yamamoto, and Ippei Danshita

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-02-04

Beschreibung: Author(s): Yasuyuki Kato, Daisuke Yamamoto, and Ippei Danshita Quantum criticality near a tricritical point is studied in the two-component Bose-Hubbard model on square lattices. The existence of a quantum tricritical point on a boundary of a superfluid-insulator transition is confirmed by quantum Monte Carlo simulations. Moreover, we analytically derive the qu... [Phys. Rev. Lett. 112, 055301] Published Mon Feb 03, 2014

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Phononic Frequency Combs through Nonlinear Resonances (2014)

L. S. Cao, D. X. Qi, R. W. Peng, Mu Wang, and P. Schmelcher

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-02-22

Beschreibung: Author(s): L. S. Cao, D. X. Qi, R. W. Peng, Mu Wang, and P. Schmelcher We explore an analogue of optical frequency combs in driven nonlinear phononic systems, and present a mechanism for generating phononic frequency combs through nonlinear resonances. In the underlying process, a set of phonon modes is simultaneously excited by the external driving which yields freque... [Phys. Rev. Lett. 112, 075505] Published Fri Feb 21, 2014

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Quantized Thermal Conductance of Nanowires at Room Temperature Due to Zenneck Surface-Phonon Polaritons (2014)

José Ordonez-Miranda, Laurent Tranchant, Beomjoon Kim, Yann Chalopin, Thomas Antoni, and Sebastian Volz

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-02-08

Beschreibung: Author(s): José Ordonez-Miranda, Laurent Tranchant, Beomjoon Kim, Yann Chalopin, Thomas Antoni, and Sebastian Volz Based on the Landauer formalism, we demonstrate that the thermal conductance due to the propagation of Zenneck surface-phonon polaritons along a polar nanowire is independent of the material characteristics and is given by π2kB2T/3h. The giant propagation length of these energy carriers establishes ... [Phys. Rev. Lett. 112, 055901] Published Fri Feb 07, 2014

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Lattice Thermal Conductivity of Si1−xGex Nanocomposites (2014)

Claudio Melis and Luciano Colombo

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-02-12

Beschreibung: Author(s): Claudio Melis and Luciano Colombo We calculate the lattice thermal conductivity in model Si1−xGex nanocomposites by molecular dynamics in a transient thermal conduction regime. Our simulations provide evidence that thermal transport depends only marginally on stoichiometry in the range 0.2≤x≤0.8, while it is deeply affected by the g... [Phys. Rev. Lett. 112, 065901] Published Tue Feb 11, 2014

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Chemical and Crystallographic Characterization of the Tip Apex in Scanning Probe Microscopy (2014)

Thomas Hofmann, Florian Pielmeier, and Franz J. Giessibl

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-02-12

Beschreibung: Author(s): Thomas Hofmann, Florian Pielmeier, and Franz J. Giessibl The apex atom of a W scanning probe tip reveals a nonspherical charge distribution as probed by a CO molecule bonded to a Cu(111) surface [Welker et al., Science 336 , 444 (2012).]. Three high-symmetry images were observed and related to three low-index crystallographic directions of the W bcc crysta... [Phys. Rev. Lett. 112, 066101] Published Tue Feb 11, 2014

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Enhanced Atomic-Scale Spin Contrast due to Spin Friction (2014)

S. Ouazi, A. Kubetzka, K. von Bergmann, and R. Wiesendanger

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-02-22

Beschreibung: Author(s): S. Ouazi, A. Kubetzka, K. von Bergmann, and R. Wiesendanger Atom manipulation with the magnetic tip of a scanning tunneling microscope is a versatile technique to construct and investigate well-defined atomic spin arrangements. Here we explore the possibility of using a magnetic adatom as a local probe to image surface spin textures. As a model system we cho... [Phys. Rev. Lett. 112, 076102] Published Fri Feb 21, 2014

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Geometric Signatures of Jamming in the Mechanical Vacuum (2014)

Peter K. Morse and Eric I. Corwin

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-21

Beschreibung: Author(s): Peter K. Morse and Eric I. Corwin Jamming has traditionally been studied as a mechanical phenomenon and characterized with mechanical order parameters. However, this approach is not meaningful in the “mechanical vacuum” of systems below jamming in which all mechanical properties are precisely zero. We find that the network of neares... [Phys. Rev. Lett. 112, 115701] Published Thu Mar 20, 2014

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Anharmonic Damping of Terahertz Acoustic Waves in a Network Glass and Its Effect on the Density of Vibrational States (2014)

G. Baldi, V. M. Giordano, B. Ruta, R. Dal Maschio, A. Fontana, and G. Monaco

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-26

Beschreibung: Author(s): G. Baldi, V. M. Giordano, B. Ruta, R. Dal Maschio, A. Fontana, and G. Monaco We report the observation, by means of high-resolution inelastic x-ray scattering, of an unusually large temperature dependence of the sound attenuation of a network glass at terahertz frequency, an unprecedentedly observed phenomenon. The anharmonicity can be ascribed to the interaction between the... [Phys. Rev. Lett. 112, 125502] Published Tue Mar 25, 2014

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Evidence of Liquid-Liquid Transition in Triphenyl Phosphite from Time-Resolved Light Scattering Experiments (2014)

Ryotaro Shimizu, Mika Kobayashi, and Hajime Tanaka

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-27

Beschreibung: Author(s): Ryotaro Shimizu, Mika Kobayashi, and Hajime Tanaka Here, we study the phase transition kinetics in a supercooled liquid state of triphenyl phosphite by means of time-resolved polarized and depolarized light scattering to address a long-standing controversy on its mechanism, i.e., whether the phenomenon is primarily induced by liquid-liquid transitio... [Phys. Rev. Lett. 112, 125702] Published Wed Mar 26, 2014

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Structure of Nanocrystalline Ti3C2 MXene Using Atomic Pair Distribution Function (2014)

Chenyang Shi, Majid Beidaghi, Michael Naguib, Olha Mashtalir, Yury Gogotsi, and Simon J. L. Billinge

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-27

Beschreibung: Author(s): Chenyang Shi, Majid Beidaghi, Michael Naguib, Olha Mashtalir, Yury Gogotsi, and Simon J. L. Billinge The structures of nanocrystalline pristine, potassium hydroxide and sodium acetate intercalated new two-dimensional materials Ti3C2 MXenes were studied using the x-ray atomic pair distribution function technique. Pristine MXene has a hexagonal structure with a=b=3.0505(5) Å, c=19.86(2) Å (S.G. P63... [Phys. Rev. Lett. 112, 125501] Published Wed Mar 26, 2014

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Morphology of Monolayer MgO Films on Ag(100): Switching from Corrugated Islands to Extended Flat Terraces (2014)

Jagriti Pal, Marco Smerieri, Edvige Celasco, Letizia Savio, Luca Vattuone, and Mario Rocca

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-27

Beschreibung: Author(s): Jagriti Pal, Marco Smerieri, Edvige Celasco, Letizia Savio, Luca Vattuone, and Mario Rocca The ability to engineer nearly perfect ultrathin oxide layers, up to the limit of monolayer thickness, is a key issue for nanotechnological applications. Here we face the difficult and important case of ultrathin MgO films on Ag(100), for which no extended and well-ordered layers could thus far be p... [Phys. Rev. Lett. 112, 126102] Published Wed Mar 26, 2014

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Determination of the Origin and Magnitude of Logarithmic Finite-Size Effects on Interfacial Tension: Role of Interfacial Fluctuations and Domain Breathing (2014)

Fabian Schmitz, Peter Virnau, and Kurt Binder

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-27

Beschreibung: Author(s): Fabian Schmitz, Peter Virnau, and Kurt Binder The ensemble-switch method for computing wall excess free energies of condensed matter is extended to estimate the interface free energies between coexisting phases very accurately. By this method, system geometries with linear dimensions L parallel and Lz perpendicular to the interface with various... [Phys. Rev. Lett. 112, 125701] Published Wed Mar 26, 2014

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Atomic-Scale Quantification of Grain Boundary Segregation in Nanocrystalline Material (2014)

M. Herbig, D. Raabe, Y. J. Li, P. Choi, S. Zaefferer, and S. Goto

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-03-28

Beschreibung: Author(s): M. Herbig, D. Raabe, Y. J. Li, P. Choi, S. Zaefferer, and S. Goto Grain boundary segregation leads to nanoscale chemical variations that can alter a material’s performance by orders of magnitude (e.g., embrittlement). To understand this phenomenon, a large number of grain boundaries must be characterized in terms of both their five crystallographic interface param... [Phys. Rev. Lett. 112, 126103] Published Thu Mar 27, 2014

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Explaining the B→K*μ+μ− data with scalar interactions (2014)

Alakabha Datta, Murugeswaran Duraisamy, and Diptimoy Ghosh

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2014-04-01

Beschreibung: Author(s): Alakabha Datta, Murugeswaran Duraisamy, and Diptimoy Ghosh Recent LHCb results on the decay B→K*μ+μ− show significant deviations from the standard model estimates in some of the angular correlations. In this paper we study the possibility of explaining these deviations using new scalar interactions. We show that new dimension-6 four-quark operators of scala... [Phys. Rev. D 89, 071501] Published Mon Mar 31, 2014

Schlagwort(e): Strong interactions & Lattice methods

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Spin Waves and Dielectric Softening of Polar Molecule Condensates (2014)

Ryan M. Wilson, Brandon M. Peden, Charles W. Clark, and Seth T. Rittenhouse

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-04-02

Beschreibung: Author(s): Ryan M. Wilson, Brandon M. Peden, Charles W. Clark, and Seth T. Rittenhouse We consider an oblate Bose-Einstein condensate of heteronuclear polar molecules in a weak applied electric field. This system supports a rich quasiparticle spectrum that plays a critical role in determining its bulk dielectric properties. In particular, in sufficiently weak fields the system undergo... [Phys. Rev. Lett. 112, 135301] Published Tue Apr 01, 2014

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Low Temperature Heat Capacity of a Severely Deformed Metallic Glass (2014)

Jonas Bünz, Tobias Brink, Koichi Tsuchiya, Fanqiang Meng, Gerhard Wilde, and Karsten Albe

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-04-02

Beschreibung: Author(s): Jonas Bünz, Tobias Brink, Koichi Tsuchiya, Fanqiang Meng, Gerhard Wilde, and Karsten Albe The low temperature heat capacity of amorphous materials reveals a low-frequency enhancement (boson peak) of the vibrational density of states, as compared with the Debye law. By measuring the low-temperature heat capacity of a Zr-based bulk metallic glass relative to a crystalline reference state, ... [Phys. Rev. Lett. 112, 135501] Published Tue Apr 01, 2014

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Continuous Self-Energy of Ions at the Dielectric Interface (2014)

Rui Wang and Zhen-Gang Wang

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-04-03

Beschreibung: Author(s): Rui Wang and Zhen-Gang Wang By treating both the short-range (solvation) and long-range (image force) electrostatic forces as well as charge polarization induced by these forces in a consistent manner, we obtain a simple theory for the self-energy of an ion that is continuous across the interface. Along with nonelectrostatic c... [Phys. Rev. Lett. 112, 136101] Published Wed Apr 02, 2014

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Polarization-Controlled Circular Second-Harmonic Generation from Metal Hole Arrays with Threefold Rotational Symmetry (2014)

Kuniaki Konishi, Takuya Higuchi, Jia Li, Jakob Larsson, Shuntaro Ishii, and Makoto Kuwata-Gonokami

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-04-03

Beschreibung: Author(s): Kuniaki Konishi, Takuya Higuchi, Jia Li, Jakob Larsson, Shuntaro Ishii, and Makoto Kuwata-Gonokami The discrete rotational symmetry of nanostructures provides a powerful and simple guiding principle for designing the second-harmonic generation process in nonlinear metamaterials. We demonstrate that, in achiral nanostructures with threefold rotational symmetries, a circularly polarized fundamental... [Phys. Rev. Lett. 112, 135502] Published Wed Apr 02, 2014

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Universal Equation of State and Pseudogap in the Two-Dimensional Fermi Gas (2014)

Marianne Bauer, Meera M. Parish, and Tilman Enss

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-04-03

Beschreibung: Author(s): Marianne Bauer, Meera M. Parish, and Tilman Enss We determine the thermodynamic properties and the spectral function for a homogeneous two-dimensional Fermi gas in the normal state using the Luttinger-Ward, or self-consistent T-matrix, approach. The density equation of state deviates strongly from that of the ideal Fermi gas even for moderate inte... [Phys. Rev. Lett. 112, 135302] Published Wed Apr 02, 2014

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Steering of a Sub-GeV Electron Beam through Planar Channeling Enhanced by Rechanneling (2014)

A. Mazzolari, E. Bagli, L. Bandiera, V. Guidi, H. Backe, W. Lauth, V. Tikhomirov, A. Berra, D. Lietti, M. Prest, E. Vallazza, and D. De Salvador

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-04-03

Beschreibung: Author(s): A. Mazzolari, E. Bagli, L. Bandiera, V. Guidi, H. Backe, W. Lauth, V. Tikhomirov, A. Berra, D. Lietti, M. Prest, E. Vallazza, and D. De Salvador We report the observation of efficient steering of a 855 MeV electron beam at MAMI (MAinzer MIkrotron) facilities by means of planar channeling and volume reflection in a bent silicon crystal. A 30.5 μm thick plate of (211) oriented Si was bent to cause quasimosaic deformation of the (111) crystall... [Phys. Rev. Lett. 112, 135503] Published Wed Apr 02, 2014

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Moiré Patterns as a Probe of Interplanar Interactions for Graphene on h-BN (2014)

M. M. van Wijk, A. Schuring, M. I. Katsnelson, and A. Fasolino

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-24

Beschreibung: Author(s): M. M. van Wijk, A. Schuring, M. I. Katsnelson, and A. Fasolino By atomistic modeling of moiré patterns of graphene on a substrate with a small lattice mismatch, we find qualitatively different strain distributions for small and large misorientation angles, corresponding to the commensurate-incommensurate transition recently observed in graphene on hexagonal BN.... [Phys. Rev. Lett. 113, 135504] Published Tue Sep 23, 2014

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Localization of Low-Frequency Oscillations in Single-Walled Carbon Nanotubes (2014)

V. V. Smirnov, D. S. Shepelev, and L. I. Manevitch

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-24

Beschreibung: Author(s): V. V. Smirnov, D. S. Shepelev, and L. I. Manevitch In the framework of the continuum shell theory, we analytically predict a new phenomenon: the weak localization of optical low-frequency oscillations in carbon nanotubes. We clarify the origin of the localization by means of the concept of the limiting phase trajectory and confirm the obtained analy... [Phys. Rev. Lett. 113, 135502] Published Tue Sep 23, 2014

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Direct Observation of Dopant Atom Diffusion in a Bulk Semiconductor Crystal Enhanced by a Large Size Mismatch (2014)

Ryo Ishikawa, Rohan Mishra, Andrew R. Lupini, Scott D. Findlay, Takashi Taniguchi, Sokrates T. Pantelides, and Stephen J. Pennycook

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-07

Beschreibung: Author(s): Ryo Ishikawa, Rohan Mishra, Andrew R. Lupini, Scott D. Findlay, Takashi Taniguchi, Sokrates T. Pantelides, and Stephen J. Pennycook Diffusion is one of the fundamental processes that govern the structure, processing, and properties of materials and it plays a crucial role in determining device lifetimes. However, direct observations of diffusion processes have been elusive and limited only to the surfaces of materials. Here we u... [Phys. Rev. Lett. 113, 155501] Published Mon Oct 06, 2014

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Pseudorotational Epitaxy of Self-Assembled Octadecyltrichlorosilane Monolayers on Sapphire (0001) (2014)

H.-G. Steinrück, A. Magerl, M. Deutsch, and B. M. Ocko

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-07

Beschreibung: Author(s): H.-G. Steinrück, A. Magerl, M. Deutsch, and B. M. Ocko The structure of octadecyltrichlorosilane self-assembled monolayers (SAMs) on sapphire (0001) was studied by Å-resolution surface-specific x-ray scattering methods. The monolayer was found to consist of three sublayers where the outermost layer corresponds to vertically oriented, closely packed alky... [Phys. Rev. Lett. 113, 156101] Published Mon Oct 06, 2014

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Analysis of J/ψ(ηc)→γ+ invisible decays in the standard model (2014)

Dao-Neng Gao

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2014-10-03

Beschreibung: Author(s): Dao-Neng Gao Motivated by the experimental study of J/ψ→γ+ invisible decay by the CLEO Collaboration, we analyze the process J/ψ→γνν¯, as the standard model background for this invisible decay, at the lowest order. Our investigation shows that Br(J/ψ→γνν¯) is far below the present experimental upper limit on the... [Phys. Rev. D 90, 077501] Published Thu Oct 02, 2014

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Topological Growing of Laughlin States in Synthetic Gauge Fields (2014)

Fabian Grusdt, Fabian Letscher, Mohammad Hafezi, and Michael Fleischhauer

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-08

Beschreibung: Author(s): Fabian Grusdt, Fabian Letscher, Mohammad Hafezi, and Michael Fleischhauer We suggest a scheme for the preparation of highly correlated Laughlin states in the presence of synthetic gauge fields, realizing an analogue of the fractional quantum Hall effect in photonic or atomic systems of interacting bosons. It is based on the idea of growing such states by adding weakly int... [Phys. Rev. Lett. 113, 155301] Published Tue Oct 07, 2014

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Coherent Magnon Optics in a Ferromagnetic Spinor Bose-Einstein Condensate (2014)

G. Edward Marti, Andrew Mac; Rae, Ryan Olf, Sean Lourette, Fang Fang, and Dan M. Stamper-Kurn

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-08

Beschreibung: Author(s): G. Edward Marti, Andrew MacRae, Ryan Olf, Sean Lourette, Fang Fang, and Dan M. Stamper-Kurn We measure the dispersion relation, gap, and magnetic moment of a magnon in the ferromagnetic F=1 spinor Bose-Einstein condensate of Rb87. From the dispersion relation we measure an average effective mass 1.033(2)stat(10)sys times the atomic mass, as determined by interfering standing and running co... [Phys. Rev. Lett. 113, 155302] Published Tue Oct 07, 2014

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Explosive Electric Breakdown due to Conducting-Particle Deposition on an Insulating Substrate (2014)

Cláudio L. N. Oliveira, Nuno A. M. Araújo, José S. Andrade, Jr., and Hans J. Herrmann

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-11

Beschreibung: Author(s): Cláudio L. N. Oliveira, Nuno A. M. Araújo, José S. Andrade, Jr., and Hans J. Herrmann We introduce a theoretical model to investigate the electric breakdown of a substrate on which highly conducting particles are adsorbed and desorbed with a probability that depends on the local electric field. We find that, by tuning the relative strength q of this dependence, the breakdown can chan... [Phys. Rev. Lett. 113, 155701] Published Fri Oct 10, 2014

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Structure Prediction for Multicomponent Materials Using Biminima (2014)

D. Schebarchov and D. J. Wales

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-11

Beschreibung: Author(s): D. Schebarchov and D. J. Wales The potential energy surface of a heteroparticle system will contain points that are local minima in both coordinate space and permutation space for the different species. We introduce the term biminima to describe these special points, and we formulate a deterministic scheme for finding them. Our s... [Phys. Rev. Lett. 113, 156102] Published Fri Oct 10, 2014

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Strong Interaction Effects and Criticality of Bosons in Shaken Optical Lattices (2014)

Wei Zheng, Boyang Liu, Jiao Miao, Cheng Chin, and Hui Zhai

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-11

Beschreibung: Author(s): Wei Zheng, Boyang Liu, Jiao Miao, Cheng Chin, and Hui Zhai We study the quantum phase transitions and identify a tricritical point between a normal Bose superfluid, a superfluid that breaks additional Z2 Ising symmetry, and a Mott insulator in a recent shaken optical lattice experiment. We show that near the transition between normal and Z2 symmetry breakin... [Phys. Rev. Lett. 113, 155303] Published Fri Oct 10, 2014

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Programmable Mechanical Metamaterials (2014)

Bastiaan Florijn, Corentin Coulais, and Martin van Hecke

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-25

Beschreibung: Author(s): Bastiaan Florijn, Corentin Coulais, and Martin van Hecke Squeezing a holey rubber slab changes its stiffness over a wide range in the direction perpendicular to the squeeze. [Phys. Rev. Lett. 113, 175503] Published Fri Oct 24, 2014

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Spatial Coherence in Near-Field Raman Scattering (2014)

Ryan Beams, Luiz Gustavo Cançado, Sang-Hyun Oh, Ado Jorio, and Lukas Novotny

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-29

Beschreibung: Author(s): Ryan Beams, Luiz Gustavo Cançado, Sang-Hyun Oh, Ado Jorio, and Lukas Novotny Inelastic light scattering in crystals has historically been treated as a spatially incoherent process, giving rise to incoherent optical radiation. Here we demonstrate that Raman scattering can be spatially coherent, in which case it depends on the dimensionality and symmetry of the scatterer. Usin... [Phys. Rev. Lett. 113, 186101] Published Tue Oct 28, 2014

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Local to Extended Transitions of Resonant Defect Modes (2014)

Joseph Lydon, Marc Serra-Garcia, and Chiara Daraio

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-30

Beschreibung: Author(s): Joseph Lydon, Marc Serra-Garcia, and Chiara Daraio A linear chain of beads exhibits localized vibrational states when a defect is introduced into the chain. If the defect is resonant, the length of chain involved in this localized excitation can be tuned. [Phys. Rev. Lett. 113, 185503] Published Wed Oct 29, 2014

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Unexpected Reconstruction of the α-Boron (111) Surface (2014)

Xiang-Feng Zhou, Artem R. Oganov, Xi Shao, Qiang Zhu, and Hui-Tian Wang

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-22

Beschreibung: Author(s): Xiang-Feng Zhou, Artem R. Oganov, Xi Shao, Qiang Zhu, and Hui-Tian Wang We report a novel reconstruction of the α-boron (111) surface, discovered using ab initio evolutionary structure prediction, and show that this unexpected neat structure has a much lower energy than the recently proposed (111)-IR,(a) surface. In this reconstruction, all single interstitial boron ato... [Phys. Rev. Lett. 113, 176101] Published Tue Oct 21, 2014

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Phonon Localization by Mass Disorder in Dense Hydrogen-Deuterium Binary Alloy (2014)

Ross T. Howie, Ioan B. Magdău, Alexander F. Goncharov, Graeme J. Ackland, and Eugene Gregoryanz

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-22

Beschreibung: Author(s): Ross T. Howie, Ioan B. Magdău, Alexander F. Goncharov, Graeme J. Ackland, and Eugene Gregoryanz Localized vibration phonon modes are observed in a dense hydrogen-deuterium mixture, due to mass distribution disorder from the different isotope masses in the mixture. [Phys. Rev. Lett. 113, 175501] Published Tue Oct 21, 2014

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Lattice Anharmonicity and Thermal Conductivity from Compressive Sensing of First-Principles Calculations (2014)

Fei Zhou (周非), Weston Nielson, Yi Xia, and Vidvuds Ozoliņš

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-28

Beschreibung: Author(s): Fei Zhou (周非), Weston Nielson, Yi Xia, and Vidvuds Ozoliņš First-principles prediction of lattice thermal conductivity κL of strongly anharmonic crystals is a long-standing challenge in solid-state physics. Making use of recent advances in information science, we propose a systematic and rigorous approach to this problem, compressive sensing lattice dynamic... [Phys. Rev. Lett. 113, 185501] Published Mon Oct 27, 2014

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Nonlocal Quantum Fluctuations and Fermionic Superfluidity in the Imbalanced Attractive Hubbard Model (2014)

M. O. J. Heikkinen, D.-H. Kim, M. Troyer, and P. Törmä

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-31

Beschreibung: Author(s): M. O. J. Heikkinen, D.-H. Kim, M. Troyer, and P. Törmä We study fermionic superfluidity in strongly anisotropic optical lattices with attractive interactions utilizing the cluster dynamical mean-field theory method, and focusing in particular on the role of nonlocal quantum fluctuations. We show that nonlocal quantum fluctuations impact the BCS superflu... [Phys. Rev. Lett. 113, 185301] Published Thu Oct 30, 2014

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Intermolecular Contrast in Atomic Force Microscopy Images without Intermolecular Bonds (2014)

Sampsa K. Hämäläinen, Nadine van der Heijden, Joost van der Lit, Stephan den Hartog, Peter Liljeroth, and Ingmar Swart

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-01

Beschreibung: Author(s): Sampsa K. Hämäläinen, Nadine van der Heijden, Joost van der Lit, Stephan den Hartog, Peter Liljeroth, and Ingmar Swart Intermolecular features in atomic force microscopy images of organic molecules have been ascribed to intermolecular bonds. A recent theoretical study [P. Hapala et al., Phys. Rev. B 90 , 085421 (2014)] showed that these features can also be explained by the flexibility of molecule-terminated tips. We... [Phys. Rev. Lett. 113, 186102] Published Fri Oct 31, 2014

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Stoner Ferromagnetism in a Thermal Pseudospin-1/2 Bose Gas (2014)

Juraj Radić, Stefan S. Natu, and Victor Galitski

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-01

Beschreibung: Author(s): Juraj Radić, Stefan S. Natu, and Victor Galitski We compute the finite-temperature phase diagram of a pseudospin-1/2 Bose gas with contact interactions, using two complementary methods: the random-phase approximation and self-consistent Hartree-Fock theory. We show that the spin-dependent interactions, which break the (pseudo-) spin-rotational sym... [Phys. Rev. Lett. 113, 185302] Published Fri Oct 31, 2014

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Stability, Energetics, and Magnetic States of Cobalt Adatoms on Graphene (2014)

Yudistira Virgus, Wirawan Purwanto, Henry Krakauer, and Shiwei Zhang

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-24

Beschreibung: Author(s): Yudistira Virgus, Wirawan Purwanto, Henry Krakauer, and Shiwei Zhang We investigate the stability and electronic properties of single Co atoms on graphene with near-exact many-body calculations. A frozen-orbital embedding scheme was combined with auxiliary-field quantum Monte Carlo calculations to increase the reach in system sizes. Several energy minima are found as... [Phys. Rev. Lett. 113, 175502] Published Thu Oct 23, 2014

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Single Molecular Spectroscopy: Identification of Individual Fullerene Molecules (2014)

Luiz H. G. Tizei, Zheng Liu, Masanori Koshino, Yoko Iizumi, Toshiya Okazaki, and Kazu Suenaga

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-10-30

Beschreibung: Author(s): Luiz H. G. Tizei, Zheng Liu, Masanori Koshino, Yoko Iizumi, Toshiya Okazaki, and Kazu Suenaga The energy lost by electrons passing through a material can reveal the symmetry of individual molecules inside the sample. [Phys. Rev. Lett. 113, 185502] Published Wed Oct 29, 2014

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Gluon spectral functions and transport coefficients in Yang-Mills theory (2014)

Michael Haas, Leonard Fister, and Jan M. Pawlowski

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): Michael Haas, Leonard Fister, and Jan M. Pawlowski We compute nonperturbative gluon spectral functions at finite temperature in quenched QCD with the maximum entropy method. We also provide a closed loop equation for the spectral function of the energy-momentum tensor in terms of the gluon spectral function. This setup is then used for computing the... [Phys. Rev. D 90, 091501] Published Thu Nov 06, 2014

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Islands of Stability in Motif Distributions of Random Networks (2014)

M. V. Tamm, A. B. Shkarin, V. A. Avetisov, O. V. Valba, and S. K. Nechaev

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-08-27

Beschreibung: Author(s): M. V. Tamm, A. B. Shkarin, V. A. Avetisov, O. V. Valba, and S. K. Nechaev We consider random nondirected networks subject to dynamics conserving vertex degrees and study, analytically and numerically, equilibrium three-vertex motif distributions in the presence of an external field h coupled to one of the motifs. For small h, the numerics is well described by the “chemica... [Phys. Rev. Lett. 113, 095701] Published Tue Aug 26, 2014

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Graphoepitaxy for Pattern Multiplication of Nanoparticle Monolayers (2014)

Mark E. Ferraro, Roger T. Bonnecaze, and Thomas M. Truskett

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-08-22

Beschreibung: Author(s): Mark E. Ferraro, Roger T. Bonnecaze, and Thomas M. Truskett We compute the free energy minimizing structures of particle monolayers in the presence of enthalpic barriers of a finite height βVext using classical density functional theory and Monte Carlo simulations. We show that a periodic square template with dimensions up to at least 10 times the particle d... [Phys. Rev. Lett. 113, 085503] Published Thu Aug 21, 2014

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Coarsening Dynamics of Binary Bose Condensates (2014)

Johannes Hofmann, Stefan S. Natu, and S. Das Sarma

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-08-28

Beschreibung: Author(s): Johannes Hofmann, Stefan S. Natu, and S. Das Sarma We study the dynamics of domain formation and coarsening in a binary Bose-Einstein condensate that is quenched across a miscible-immiscible phase transition. The late-time evolution of the system is universal and governed by scaling laws for the correlation functions. We numerically determine the sc... [Phys. Rev. Lett. 113, 095702] Published Wed Aug 27, 2014

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Reconnections of Quantized Vortex Rings in Superfluid He4 at Very Low Temperatures (2014)

P. M. Walmsley, P. A. Tompsett, D. E. Zmeev, and A. I. Golov

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-18

Beschreibung: Author(s): P. M. Walmsley, P. A. Tompsett, D. E. Zmeev, and A. I. Golov Collisions in a beam of unidirectional quantized vortex rings of nearly identical radii R in superfluid He4 in the limit of zero temperature (0.05 K) were studied using time-of-flight spectroscopy. Reconnections between two primary rings result in secondary vortex loops of both smaller and larger ra... [Phys. Rev. Lett. 113, 125302] Published Wed Sep 17, 2014

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Observation of a Disordered Bosonic Insulator from Weak to Strong Interactions (2014)

Chiara D’Errico, Eleonora Lucioni, Luca Tanzi, Lorenzo Gori, Guillaume Roux, Ian P. McCulloch, Thierry Giamarchi, Massimo Inguscio, and Giovanni Modugno

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-08-26

Beschreibung: Author(s): Chiara D’Errico, Eleonora Lucioni, Luca Tanzi, Lorenzo Gori, Guillaume Roux, Ian P. McCulloch, Thierry Giamarchi, Massimo Inguscio, and Giovanni Modugno We employ ultracold atoms with controllable disorder and interaction to study the paradigmatic problem of disordered bosons in the full disorder-interaction plane. Combining measurements of coherence, transport and excitation spectra, we get evidence of an insulating regime extending from weak to st... [Phys. Rev. Lett. 113, 095301] Published Mon Aug 25, 2014

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Exotic four quark matter: Z1(4475) (2014)

Li Ma, Xiao-Hai Liu, Xiang Liu, and Shi-Lin Zhu

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2014-08-22

Beschreibung: Author(s): Li Ma, Xiao-Hai Liu, Xiang Liu, and Shi-Lin Zhu Motivated by the LHCb’s recent confirmation of Z1(4475) as the JP=1+ resonance, we investigate various exotic interpretations of Z1(4475), which may be an axial vector tetraquark state, the P-wave excitation of the S-wave D1D¯* or D2D¯* molecule, the S-wave molecule composed of a D or D* meson and a... [Phys. Rev. D 90, 037502] Published Thu Aug 21, 2014

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Condensation of Helium in Aerogel and Athermal Dynamics of the Random-Field Ising Model (2014)

Geoffroy J. Aubry, Fabien Bonnet, Mathieu Melich, Laurent Guyon, Panayotis Spathis, Florence Despetis, and Pierre-Etienne Wolf

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-08-22

Beschreibung: Author(s): Geoffroy J. Aubry, Fabien Bonnet, Mathieu Melich, Laurent Guyon, Panayotis Spathis, Florence Despetis, and Pierre-Etienne Wolf High resolution measurements reveal that condensation isotherms of He4 in high porosity silica aerogel become discontinuous below a critical temperature. We show that this behavior does not correspond to an equilibrium phase transition modified by the disorder induced by the aerogel structure, but t... [Phys. Rev. Lett. 113, 085301] Published Thu Aug 21, 2014

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Direct Observation of Depth-Dependent Atomic Displacements Associated with Dislocations in Gallium Nitride (2014)

J. G. Lozano, H. Yang, M. P. Guerrero-Lebrero, A. J. D’Alfonso, A. Yasuhara, E. Okunishi, S. Zhang, C. J. Humphreys, L. J. Allen, P. L. Galindo, P. B. Hirsch, and P. D. Nellist

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-25

Beschreibung: Author(s): J. G. Lozano, H. Yang, M. P. Guerrero-Lebrero, A. J. D’Alfonso, A. Yasuhara, E. Okunishi, S. Zhang, C. J. Humphreys, L. J. Allen, P. L. Galindo, P. B. Hirsch, and P. D. Nellist We demonstrate that the aberration-corrected scanning transmission electron microscope has a sufficiently small depth of field to observe depth-dependent atomic displacements in a crystal. The depth-dependent displacements associated with the Eshelby twist of dislocations in GaN normal to the foil w... [Phys. Rev. Lett. 113, 135503] Published Wed Sep 24, 2014

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Surface-Step-Induced Oscillatory Oxide Growth (2014)

Liang Li, Langli Luo, Jim Ciston, Wissam A. Saidi, Eric A. Stach, Judith C. Yang, and Guangwen Zhou

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-26

Beschreibung: Author(s): Liang Li, Langli Luo, Jim Ciston, Wissam A. Saidi, Eric A. Stach, Judith C. Yang, and Guangwen Zhou We report in situ atomic-resolution transmission electron microscopy observations of the oxidation of stepped Cu surfaces. We find that the presence of surface steps both inhibits oxide film growth and leads to the oxide decomposition, thereby resulting in oscillatory oxide film growth. Using atomis... [Phys. Rev. Lett. 113, 136104] Published Thu Sep 25, 2014

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Infinite Lifetime of Underwater Superhydrophobic States (2014)

Muchen Xu, Guangyi Sun, and Chang-Jin Kim

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-26

Beschreibung: Author(s): Muchen Xu, Guangyi Sun, and Chang-Jin Kim The water-repelling properties of superhydrophobic surfaces may last longer when they’re used at shallower depths. [Phys. Rev. Lett. 113, 136103] Published Thu Sep 25, 2014

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Origin of High-Resolution IETS-STM Images of Organic Molecules with Functionalized Tips (2014)

Prokop Hapala, Ruslan Temirov, F. Stefan Tautz, and Pavel Jelínek

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-26

Beschreibung: Author(s): Prokop Hapala, Ruslan Temirov, F. Stefan Tautz, and Pavel Jelínek Recently, the family of high-resolution scanning probe imaging techniques using decorated tips has been complemented by a method based on inelastic electron tunneling spectroscopy (IETS). The new technique resolves the inner structure of organic molecules by mapping the vibrational energy of a singl... [Phys. Rev. Lett. 113, 226101] Published Tue Nov 25, 2014

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Role of Structure and Entropy in Determining Differences in Dynamics for Glass Formers with Different Interaction Potentials (2014)

Atreyee Banerjee, Shiladitya Sengupta, Srikanth Sastry, and Sarika Maitra Bhattacharyya

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-27

Beschreibung: Author(s): Atreyee Banerjee, Shiladitya Sengupta, Srikanth Sastry, and Sarika Maitra Bhattacharyya We present a study of two model liquids with different interaction potentials, exhibiting similar structure but significantly different dynamics at low temperatures. By evaluating the configurational entropy, we show that the differences in the dynamics of these systems can be understood in terms of... [Phys. Rev. Lett. 113, 225701] Published Wed Nov 26, 2014

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Surface segregation driven by molecular architecture asymmetry in polymer blends (2014)

Jae Sik Lee, Nam-Heui Lee, Somesh Peri, Mark D. Foster, Charles F. Majkrzak, Renfeng Hu, and David T. Wu

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-27

Beschreibung: Author(s): Jae Sik Lee, Nam-Heui Lee, Somesh Peri, Mark D. Foster, Charles F. Majkrzak, Renfeng Hu, and David T. Wu The contributions of chain ends and branch points to surface segregation of long-branched chains in blends with linear chains have been studied using neutron reflectometry and surface-enhanced Raman spectroscopy for a series of novel, well-defined polystyrenes. A linear response theory accounting fo... [Phys. Rev. Lett. 113, 225702] Published Wed Nov 26, 2014

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p-Wave Superfluidity by Spin-Nematic Fermi Surface Deformation (2014)

Jan Gukelberger, Evgeny Kozik, Lode Pollet, Nikolay Prokof’ev, Manfred Sigrist, Boris Svistunov, and Matthias Troyer

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-05

Beschreibung: Author(s): Jan Gukelberger, Evgeny Kozik, Lode Pollet, Nikolay Prokof’ev, Manfred Sigrist, Boris Svistunov, and Matthias Troyer We study attractively interacting fermions on a square lattice with dispersion relations exhibiting strong spin-dependent anisotropy. The resulting Fermi surface mismatch suppresses the s-wave BCS-type instability, clearing the way for unconventional types of order. Unbiased sampling of the Feynman ... [Phys. Rev. Lett. 113, 195301] Published Tue Nov 04, 2014

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First-Principles Approach to Nonlinear Lattice Dynamics: Anomalous Spectra in PbTe (2014)

Yue Chen (陈粤), Xinyuan Ai (艾馨元), and C. A. Marianetti

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-03

Beschreibung: Author(s): Yue Chen (陈粤), Xinyuan Ai (艾馨元), and C. A. Marianetti Here we introduce a new approach to compute the finite temperature lattice dynamics from first principles via the newly developed slave mode expansion. We study PbTe where inelastic neutron scattering reveals strong signatures of nonlinearity as evidenced by anomalous features which emerge in the ph... [Phys. Rev. Lett. 113, 105501] Published Tue Sep 02, 2014

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BRST-symmetry breaking and Bose-ghost propagator in lattice minimal Landau gauge (2014)

Attilio Cucchieri, David Dudal, Tereza Mendes, and Nele Vandersickel

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2014-09-04

Beschreibung: Author(s): Attilio Cucchieri, David Dudal, Tereza Mendes, and Nele Vandersickel The Bose-ghost propagator has been proposed as a carrier of the confining force in Yang-Mills theories in minimal Landau gauge. We present the first numerical evaluation of this propagator, using lattice simulations for the SU(2) gauge group in the scaling region. Our data are well described by a si... [Phys. Rev. D 90, 051501] Published Wed Sep 03, 2014

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Inducing Magnetism in Pure Organic Molecules by Single Magnetic Atom Doping (2014)

Violeta Iancu, Kai-Felix Braun, Koen Schouteden, and Chris Van Haesendonck

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-04

Beschreibung: Author(s): Violeta Iancu, Kai-Felix Braun, Koen Schouteden, and Chris Van Haesendonck We report on in situ chemical reactions between an organic trimesic acid (TMA) ligand and a Co atom center. By varying the substrate temperature, we are able to explore the Co–TMA interactions and create novel magnetic complexes that preserve the chemical structure of the ligands. Using scanning tun... [Phys. Rev. Lett. 113, 106102] Published Wed Sep 03, 2014

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Quantitative Adsorbate Structure Determination for Quasicrystals Using X-Ray Standing Waves (2014)

R. D. Diehl, H. I. Li, S. Y. Su, A. Mayer, N. A. Stanisha, J. Ledieu, K. R. J. Lovelock, Robert G. Jones, A. Deyko, L. H. Wearing, R. McGrath, A. Chaudhuri, and D. P. Woodruff

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-04

Beschreibung: Author(s): R. D. Diehl, H. I. Li, S. Y. Su, A. Mayer, N. A. Stanisha, J. Ledieu, K. R. J. Lovelock, Robert G. Jones, A. Deyko, L. H. Wearing, R. McGrath, A. Chaudhuri, and D. P. Woodruff The quantitative structure determination of adsorbed species on quasicrystal surfaces has so far appeared to present insurmountable problems. The normal incidence standing x-ray wave field technique offers a simple solution, without extensive data sets or large computations. Its application to quasi... [Phys. Rev. Lett. 113, 106101] Published Wed Sep 03, 2014

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Atomic Structure of a Spinel-Like Transition Al2O3(100) Surface (2014)

Thomas N. Jensen, Kristoffer Meinander, Stig Helveg, Adam S. Foster, Sampo Kulju, Tiziana Musso, and Jeppe V. Lauritsen

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-05

Beschreibung: Author(s): Thomas N. Jensen, Kristoffer Meinander, Stig Helveg, Adam S. Foster, Sampo Kulju, Tiziana Musso, and Jeppe V. Lauritsen We study a crystalline epitaxial alumina thin film with the characteristics of a spinel-type transition Al2O3(100) surface by using atom-resolved noncontact atomic force microscopy and density functional theory. It is shown that the films are terminated by an Al-O layer rich in Al vacancies, exhibit... [Phys. Rev. Lett. 113, 106103] Published Thu Sep 04, 2014

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Modified model of top quark condensation (2014)

M. A. Zubkov

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2014-09-06

Beschreibung: Author(s): M. A. Zubkov We develop the modification of the top-quark condensation scenario, in which the Higgs boson is composed of all Standard Model fermions. Within this scenario, we suggest the phenomenological model with nonlocal four-fermion interactions in which at the distances of the order of ∼1/100 GeV the theor... [Phys. Rev. D 90, 057501] Published Fri Sep 05, 2014

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Why Does Graphene Behave as a Weakly Interacting System? (2014)

Johannes Hofmann, Edwin Barnes, and S. Das Sarma

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-06

Beschreibung: Author(s): Johannes Hofmann, Edwin Barnes, and S. Das Sarma We address the puzzling weak-coupling perturbative behavior of graphene interaction effects as manifested experimentally, in spite of the effective fine structure constant being large, by calculating the effect of Coulomb interactions on the quasiparticle properties to next-to-leading order in the r... [Phys. Rev. Lett. 113, 105502] Published Fri Sep 05, 2014

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Segregation Stabilizes Nanocrystalline Bulk Steel with Near Theoretical Strength (2014)

Yujiao Li, Dierk Raabe, Michael Herbig, Pyuck-Pa Choi, Shoji Goto, Aleksander Kostka, Hiroshi Yarita, Christine Borchers, and Reiner Kirchheim

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-06

Beschreibung: Author(s): Yujiao Li, Dierk Raabe, Michael Herbig, Pyuck-Pa Choi, Shoji Goto, Aleksander Kostka, Hiroshi Yarita, Christine Borchers, and Reiner Kirchheim Grain refinement through severe plastic deformation enables synthesis of ultrahigh-strength nanostructured materials. Two challenges exist in that context: First, deformation-driven grain refinement is limited by dynamic dislocation recovery and crystal coarsening due to capillary driving forces; se... [Phys. Rev. Lett. 113, 106104] Published Fri Sep 05, 2014

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High Chemical Activity of a Perovskite Surface: Reaction of CO with Sr3Ru2O7 (2014)

Bernhard Stöger, Marcel Hieckel, Florian Mittendorfer, Zhiming Wang, David Fobes, Jin Peng, Zhiqiang Mao, Michael Schmid, Josef Redinger, and Ulrike Diebold

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-11

Beschreibung: Author(s): Bernhard Stöger, Marcel Hieckel, Florian Mittendorfer, Zhiming Wang, David Fobes, Jin Peng, Zhiqiang Mao, Michael Schmid, Josef Redinger, and Ulrike Diebold Adsorption of CO at the Sr3Ru2O7(001) surface was studied with low-temperature scanning tunneling microscopy (STM) and density functional theory. In situ cleaved single crystals terminate in an almost perfect SrO surface. At 78 K, CO first populates impurities and then adsorbs above the apical surfa... [Phys. Rev. Lett. 113, 116101] Published Wed Sep 10, 2014

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Estimating nonlinear QCD effects in ultrahigh energy neutrino events at IceCube (2014)

V. P. Gonçalves and D. R. Gratieri

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2014-09-12

Beschreibung: Author(s): V. P. Gonçalves and D. R. Gratieri The number of ultrahigh energy events at IceCube is estimated, for the first time, taking into account nonlinear QCD effects in the neutrino-hadron cross section. We assume that the extragalactic neutrino flux is given by Φν(Eν)=Φ0Eν-2 and estimate the neutrino-hadron cross section using the dipole ... [Phys. Rev. D 90, 057502] Published Thu Sep 11, 2014

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Silicon–Carbon Bond Inversions Driven by 60-keV Electrons in Graphene (2014)

Toma Susi, Jani Kotakoski, Demie Kepaptsoglou, Clemens Mangler, Tracy C. Lovejoy, Ondrej L. Krivanek, Recep Zan, Ursel Bangert, Paola Ayala, Jannik C. Meyer, and Quentin Ramasse

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-12

Beschreibung: Author(s): Toma Susi, Jani Kotakoski, Demie Kepaptsoglou, Clemens Mangler, Tracy C. Lovejoy, Ondrej L. Krivanek, Recep Zan, Ursel Bangert, Paola Ayala, Jannik C. Meyer, and Quentin Ramasse We demonstrate that 60-keV electron irradiation drives the diffusion of threefold-coordinated Si dopants in graphene by one lattice site at a time. First principles simulations reveal that each step is caused by an electron impact on a C atom next to the dopant. Although the atomic motion happens be... [Phys. Rev. Lett. 113, 115501] Published Thu Sep 11, 2014

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Gapless Topological Fulde-Ferrell Superfluidity in Spin-Orbit Coupled Fermi Gases (2014)

Ye Cao, Shu-Hao Zou, Xia-Ji Liu, Su Yi, Gui-Lu Long, and Hui Hu

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-09-13

Beschreibung: Author(s): Ye Cao, Shu-Hao Zou, Xia-Ji Liu, Su Yi, Gui-Lu Long, and Hui Hu Topological superfluids usually refer to a superfluid state which is gapped in the bulk but metallic at the boundary. Here we report that a gapless, topologically nontrivial superfluid with an inhomogeneous Fulde-Ferrell pairing order parameter can emerge in a two-dimensional spin-orbit coupled Ferm... [Phys. Rev. Lett. 113, 115302] Published Fri Sep 12, 2014

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Nucleation at the Contact Line Observed on Nanotextured Surfaces (2014)

C. W. Gurganus, J. C. Charnawskas, A. B. Kostinski, and R. A. Shaw

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-03

Beschreibung: Author(s): C. W. Gurganus, J. C. Charnawskas, A. B. Kostinski, and R. A. Shaw It has been conjectured that roughness plays a role in surface nucleation, the tendency for freezing to begin preferentially at the liquid-gas interface. Using high speed imaging, we sought evidence for freezing at the contact line on catalyst substrates with imposed characteristic length scales (te... [Phys. Rev. Lett. 113, 235701] Published Tue Dec 02, 2014

Schlagwort(e): Condensed Matter: Structure, etc.

Print ISSN: 0031-9007

Digitale ISSN: 1079-7114

Thema: Physik

Publiziert von American Physical Society (APS)

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Corbino Disk Viscometer for 2D Quantum Electron Liquids (2014)

Andrea Tomadin, Giovanni Vignale, and Marco Polini

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-03

Beschreibung: Author(s): Andrea Tomadin, Giovanni Vignale, and Marco Polini The shear viscosity of a variety of strongly interacting quantum fluids, ranging from ultracold atomic Fermi gases to quark-gluon plasmas, can be accurately measured. On the contrary, no experimental data exist, to the best of our knowledge, on the shear viscosity of two-dimensional quantum electron... [Phys. Rev. Lett. 113, 235901] Published Tue Dec 02, 2014

Schlagwort(e): Condensed Matter: Structure, etc.

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Thema: Physik

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Superionicity and Polymorphism in Calcium Fluoride at High Pressure (2014)

Claudio Cazorla and Daniel Errandonea

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-05

Beschreibung: Author(s): Claudio Cazorla and Daniel Errandonea We present a combined experimental and computational first-principles study of the superionic and structural properties of CaF 2 at high P-T conditions. We observe an anomalous superionic behavior in the low-P fluorite phase that consists of a decrease of the normal → superionic critical temperature ... [Phys. Rev. Lett. 113, 235902] Published Thu Dec 04, 2014

Schlagwort(e): Condensed Matter: Structure, etc.

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Thema: Physik

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Experimental Identification of Diffusive Coupling Using 2D NMR (2014)

Y.-Q. Song, G. Carneiro, L. M. Schwartz, and D. L. Johnson

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-05

Beschreibung: Author(s): Y.-Q. Song, G. Carneiro, L. M. Schwartz, and D. L. Johnson Spin relaxation based nuclear magnetic resonance (NMR) methods have been used extensively to determine pore size distributions in a variety of materials. This approach is based on the assumption that each pore is in the fast diffusion limit but that diffusion between pores can be neglected. However,... [Phys. Rev. Lett. 113, 235503] Published Thu Dec 04, 2014

Schlagwort(e): Condensed Matter: Structure, etc.

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Thema: Physik

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Static Dielectric Permittivity of Ice from First Principles (2014)

Nicéphore Bonnet and Nicola Marzari

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-10

Beschreibung: Author(s): Nicéphore Bonnet and Nicola Marzari The static permittivity of ice is computed from first principles as a function of the electric field, together with the generalized Kirkwood factor. The molecular dipole in ice is unambiguously obtained by an original method combining a slab approach and Berry phase calculations, and the fluctuation... [Phys. Rev. Lett. 113, 245501] Published Tue Dec 09, 2014

Schlagwort(e): Condensed Matter: Structure, etc.

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Thema: Physik

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Critical Dynamical Heterogeneities Close to Continuous Second-Order Glass Transitions (2014)

Saroj Kumar Nandi, Giulio Biroli, Jean-Philippe Bouchaud, Kunimasa Miyazaki, and David R. Reichman

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-10

Beschreibung: Author(s): Saroj Kumar Nandi, Giulio Biroli, Jean-Philippe Bouchaud, Kunimasa Miyazaki, and David R. Reichman We analyze, using inhomogeneous mode-coupling theory, the critical scaling behavior of the dynamical susceptibility at a distance ε from continuous second-order glass transitions. We find that the dynamical correlation length ξ behaves generically as ε -1/3 and that the upper critical dimension is eq... [Phys. Rev. Lett. 113, 245701] Published Tue Dec 09, 2014

Schlagwort(e): Condensed Matter: Structure, etc.

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