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Electronic structure of Ca_{10}(Pt_{4}As_{8})(Fe_{2−x}Pt_{x}As_{2})_{5} with metallic Pt_{4}As_{8} layers: An angle-resolved photoemission spectroscopy study (2013)

X. P. Shen, S. D. Chen, Q. Q. Ge, Z. R. Ye, F. Chen, H. C. Xu, S. Y. Tan, X. H. Niu, Q. Fan, B. P. Xie, and D. L. Feng

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-14

Beschreibung: Author(s): X. P. Shen, S. D. Chen, Q. Q. Ge, Z. R. Ye, F. Chen, H. C. Xu, S. Y. Tan, X. H. Niu, Q. Fan, B. P. Xie, and D. L. Feng We studied the low-lying electronic structure of the newly discovered iron-platinum-arsenide superconductor, Ca 10 (Pt 4 As 8 )(Fe 2− x Pt x As 2 ) 5 ( T c =22 K) with angle-resolved photoemission spectroscopy. We found that the Pt 4 As 8 layer contributes to a small electronlike Fermi surface, indicative of metallic c... [Phys. Rev. B 88, 115124] Published Fri Sep 13, 2013

Schlagwort(e): Electronic structure and strongly correlated systems

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

Publiziert von American Physical Society (APS)

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Distinct in-plane resistivity anisotropy in a detwinned FeTe single crystal: Evidence for a Hund's metal (2013)

Juan Jiang (姜娟), C. He (贺诚), Y. Zhang (张焱), M. Xu (徐敏), Q. Q. Ge (葛青亲), Z. R. Ye (叶子荣), F. Chen (陈飞), B. P. Xie (谢斌平), and D. L. Feng (封东来)

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-09-18

Beschreibung: Author(s): Juan Jiang (姜娟), C. He (贺诚), Y. Zhang (张焱), M. Xu (徐敏), Q. Q. Ge (葛青亲), Z. R. Ye (叶子荣), F. Chen (陈飞), B. P. Xie (谢斌平), and D. L. Feng (封东来) The in-plane resistivity anisotropy has been studied with the Montgomery method on the detwinned parent compound of the iron-based superconductor FeTe. The observed resistivity in the antiferromagnetic (AFM) direction is larger than that in the ferromagnetic (FM) direction, which is different from t... [Phys. Rev. B 88, 115130] Published Tue Sep 17, 2013

Schlagwort(e): Electronic structure and strongly correlated systems

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Thema: Physik

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First-principles demonstration of superconductivity at 280 K in hydrogen sulfide with low phosphorus substitution (2016)

Yanfeng Ge, Fan Zhang, and Yugui Yao

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2016-06-17

Beschreibung: Author(s): Yanfeng Ge, Fan Zhang, and Yugui Yao Recently, BCS superconductivity at 203 K has been observed in a highly compressed hydrogen sulfide. We use first-principles calculations to systematically examine the effects of partially substituting chalcogen atoms on the superconductivity of hydrogen chalcogenides under high pressures. We find de… [Phys. Rev. B 93, 224513] Published Thu Jun 16, 2016

Schlagwort(e): Superfluidity and superconductivity

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Thema: Physik

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Magnetic dipoles at topological defects in the Meissner state of a nanostructured superconductor (2016)

Jun-Yi Ge, Vladimir N. Gladilin, Cun Xue, Jacques Tempere, Jozef T. Devreese, Joris Van de Vondel, Youhe Zhou, and Victor V. Moshchalkov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2016-06-03

Beschreibung: Author(s): Jun-Yi Ge, Vladimir N. Gladilin, Cun Xue, Jacques Tempere, Jozef T. Devreese, Joris Van de Vondel, Youhe Zhou, and Victor V. Moshchalkov In a magnetic field, superconductivity is manifested by total magnetic field expulsion (Meissner effect) or by the penetration of integer multiples of the flux quantum Φ 0 . Here we present experimental results revealing magnetic dipoles formed by Meissner current flowing around artificially introduce… [Phys. Rev. B 93, 224502] Published Thu Jun 02, 2016

Schlagwort(e): Superfluidity and superconductivity

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Thema: Physik

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Local representation of the electronic dielectric response function (2015)

Xiaochuan Ge and Deyu Lu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-12-15

Beschreibung: Author(s): Xiaochuan Ge and Deyu Lu We present a local representation of the electronic dielectric response function, based on a spatial partition of the dielectric response into contributions from each occupied Wannier orbital using a generalized density functional perturbation theory. This procedure is fully ab initio , and therefore… [Phys. Rev. B 92, 241107(R)] Published Fri Dec 11, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Doping dependence of the electronic structure in phosphorus-doped ferropnictide superconductor BaFe_{2}(As_{1−x}P_{x})_{2} studied by angle-resolved photoemission spectroscopy (2012)

Z. R. Ye, Y. Zhang, F. Chen, M. Xu, Q. Q. Ge, J. Jiang, B. P. Xie, and D. L. Feng

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2012-07-24

Beschreibung: Author(s): Z. R. Ye, Y. Zhang, F. Chen, M. Xu, Q. Q. Ge, J. Jiang, B. P. Xie, and D. L. Feng BaFe 2 (As 1− x P x ) 2 is a unique iron-based superconductor, where the superconductivity is induced by the isovalent substitution of phosphorus (P) for arsenic (As). Unlike other iron pnictides, the superconducting gap in BaFe 2 (As 1− x P x ) 2 has been suggested to contain nodal lines by various experiments. Th... [Phys. Rev. B 86, 035136] Published Mon Jul 23, 2012

Schlagwort(e): Electronic structure and strongly correlated systems

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7

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Evidence for an s-wave superconducting gap in K_{x}Fe_{2−y}Se_{2} from angle-resolved photoemission (2012)

M. Xu, Q. Q. Ge, R. Peng, Z. R. Ye, Juan Jiang, F. Chen, X. P. Shen, B. P. Xie, Y. Zhang, A. F. Wang, X. F. Wang, X. H. Chen, and D. L. Feng

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2012-06-21

Beschreibung: Author(s): M. Xu, Q. Q. Ge, R. Peng, Z. R. Ye, Juan Jiang, F. Chen, X. P. Shen, B. P. Xie, Y. Zhang, A. F. Wang, X. F. Wang, X. H. Chen, and D. L. Feng Although a nodeless superconducting gap has been observed on the large Fermi pockets around the zone corner in K x Fe 2− y Se 2 , whether its pairing symmetry is s wave or nodeless d wave is still under intense debate. Here we report an isotropic superconducting gap distribution on the small electron Fermi... [Phys. Rev. B 85, 220504] Published Wed Jun 20, 2012

Schlagwort(e): Superfluidity and superconductivity

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8

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Symmetry breaking via orbital-dependent reconstruction of electronic structure in detwinned NaFeAs (2012)

Y. Zhang, C. He, Z. R. Ye, J. Jiang, F. Chen, M. Xu, Q. Q. Ge, B. P. Xie, J. Wei, M. Aeschlimann, X. Y. Cui, M. Shi, J. P. Hu, and D. L. Feng

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2012-02-23

Beschreibung: Author(s): Y. Zhang, C. He, Z. R. Ye, J. Jiang, F. Chen, M. Xu, Q. Q. Ge, B. P. Xie, J. Wei, M. Aeschlimann, X. Y. Cui, M. Shi, J. P. Hu, and D. L. Feng The superconductivity discovered in iron pnictides is intimately related to a nematic ground state, where the C 4 rotational symmetry is broken via the structural and magnetic transitions. We here study the nematicity in NaFeAs with polarization-dependent angle-resolved photoemission spectroscopy. A ... [Phys. Rev. B 85, 085121] Published Wed Feb 22, 2012

Schlagwort(e): Electronic structure and strongly correlated systems

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Peak effect in optimally doped p-type single-crystal Ba_{0.5}K_{0.5}Fe_{2}As_{2} studied by ac magnetization measurements (2013)

J. Ge, J. Gutierrez, J. Li, J. Yuan, H.-B. Wang, K. Yamaura, E. Takayama-Muromachi, and V. V. Moshchalkov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2013-10-15

Beschreibung: Author(s): J. Ge, J. Gutierrez, J. Li, J. Yuan, H.-B. Wang, K. Yamaura, E. Takayama-Muromachi, and V. V. Moshchalkov We have used the ac magnetic susceptibility to investigate the vortex state in an optimally doped p -type Ba 0.5 K 0.5 Fe 2 As 2 single crystal under various ac and dc fields. A peak effect is observed in the temperature dependence of the in-phase ac susceptibility, indicating an order-disorder transition o... [Phys. Rev. B 88, 144505] Published Mon Oct 14, 2013

Schlagwort(e): Superfluidity and superconductivity

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Role of degeneracy, hybridization, and nesting in the properties of multiorbital systems (2011)

Andrew Nicholson, Qinlong Luo, Weihao Ge, José Riera, Maria Daghofer, George B. Martins, Adriana Moreo, and Elbio Dagotto

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2011-09-21

Beschreibung: Author(s): Andrew Nicholson, Qinlong Luo, Weihao Ge, José Riera, Maria Daghofer, George B. Martins, Adriana Moreo, and Elbio Dagotto To understand the role that degeneracy, hybridization, and nesting play in the magnetic and pairing properties of multiorbital Hubbard models we here study numerically two types of two-orbital models, both with holelike and electron-like Fermi surfaces (FS's) that are related by nesting vectors ( π ,0... [Phys. Rev. B 84, 094519] Published Tue Sep 20, 2011

Schlagwort(e): Superfluidity and superconductivity

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