Superconductivity close to magnetic instability in Fe(Se 1-xTex)0.82

M. H. Fang; H. M. Pham; B. Qian; T. J. Liu; E. K. Vehstedt; Y. Liu; L. Spinu; Z. Q. Mao

doi:10.1103/PhysRevB.78.224503

Superconductivity close to magnetic instability in Fe(Se _1-xTe_x)_0.82

M. H. Fang, H. M. Pham, B. Qian, T. J. Liu, E. K. Vehstedt, Y. Liu, L. Spinu, Z. Q. Mao

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Abstract

We report our study of the evolution of superconductivity and the phase diagram of the ternary Fe(Se_1-xTe_x)_0.82 (0≤x≤1.0) system. We discovered a superconducting phase with T _c,max=14 K in the 0.3<x<1.0 range. This superconducting phase is suppressed when the sample composition approaches the end member FeTe _0.82, which exhibits an incommensurate antiferromagnetic order. We discuss the relationship between the superconductivity and magnetism of this material system in terms of recent results from neutron-scattering measurements. Our results and analyses suggest that superconductivity in this class of Fe-based compounds is associated with magnetic fluctuations and therefore may be unconventional in nature.

Original language	English (US)
Article number	224503
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.78.224503
State	Published - Dec 1 2008

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Superconductivity close to magnetic instability in Fe(Se 1-xTex)0.82",

abstract = "We report our study of the evolution of superconductivity and the phase diagram of the ternary Fe(Se1-xTex)0.82 (0≤x≤1.0) system. We discovered a superconducting phase with T c,max=14 K in the 0.30.82, which exhibits an incommensurate antiferromagnetic order. We discuss the relationship between the superconductivity and magnetism of this material system in terms of recent results from neutron-scattering measurements. Our results and analyses suggest that superconductivity in this class of Fe-based compounds is associated with magnetic fluctuations and therefore may be unconventional in nature.",

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T1 - Superconductivity close to magnetic instability in Fe(Se 1-xTex)0.82

AU - Fang, M. H.

AU - Pham, H. M.

AU - Qian, B.

AU - Liu, T. J.

AU - Vehstedt, E. K.

AU - Liu, Y.

AU - Spinu, L.

AU - Mao, Z. Q.

PY - 2008/12/1

Y1 - 2008/12/1

N2 - We report our study of the evolution of superconductivity and the phase diagram of the ternary Fe(Se1-xTex)0.82 (0≤x≤1.0) system. We discovered a superconducting phase with T c,max=14 K in the 0.30.82, which exhibits an incommensurate antiferromagnetic order. We discuss the relationship between the superconductivity and magnetism of this material system in terms of recent results from neutron-scattering measurements. Our results and analyses suggest that superconductivity in this class of Fe-based compounds is associated with magnetic fluctuations and therefore may be unconventional in nature.

AB - We report our study of the evolution of superconductivity and the phase diagram of the ternary Fe(Se1-xTex)0.82 (0≤x≤1.0) system. We discovered a superconducting phase with T c,max=14 K in the 0.30.82, which exhibits an incommensurate antiferromagnetic order. We discuss the relationship between the superconductivity and magnetism of this material system in terms of recent results from neutron-scattering measurements. Our results and analyses suggest that superconductivity in this class of Fe-based compounds is associated with magnetic fluctuations and therefore may be unconventional in nature.

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Superconductivity close to magnetic instability in Fe(Se _1-xTe_x)_0.82

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