Competitions of magnetism and superconductivity in FeAs-based materials

2008/07/03 by Shuo Yang, Yang Shuo, Wen-Long You +4
Business, Management and Accounting · Materials Science · Physics and Astronomy · #Condensed matter physics #Corporate Taxation and Avoidance #Iron-based superconductors research #Magnetism #Materials science #Physics #Physics of Superconductivity and Magnetism #Superconductivity #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1088/1674-1056/18/6/071

published as Chin. Phys. B 18(06), 2545 (2009) · 5 pages, 3 figures

arxiv created 2008/07/03 · openalex publication_date 2009/06/01 · arxiv updated 2015/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

Using the numerical unrestricted Hartree–Fock approach, we study the ground state of a two-orbital model describing newly discovered FeAs-based superconductors. We observe the competition of a (0, π) mode spin-density wave and the superconductivity as the doping concentration changes. There might be a small region in the electron-doping side where the magnetism and superconductivity coexist. The superconducting pairing is found to be spin singlet, orbital even, and coexisting s xy + d x 2 − y 2 wave (even parity).

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