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Edge superconducting correlation in the attractive- U Kane-Mele-Hubbard model

机译:有吸引力的U Kane-Mele-Hubbard模型中的边缘超导相关

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摘要

The two-dimensional Kane-Mele model with attractive Hubbard interaction U is studied by using a self-consistent mean-field theory. At U = 0, the ground state is a topological insulator. At U larger than a critical value U_c, the ground state is a bulk superconductor. At 0 < U < U_C, the bulk remains insulating while the edge state shows superconducting correlation. The effective model for the edge superconducting state is discussed.
机译:利用自洽平均场理论研究了具有吸引人的哈伯德相互作用U的二维Kane-Mele模型。在U = 0时,基态是拓扑绝缘体。当U大于临界值U_c时,基态为体超导体。在0

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  • 来源
    《Physical review》 |2012年第10期|p.104505.1-104505.5|共5页
  • 作者单位

    Department of Physics and Center of Theoretical and Computational Physics, University of Hong Kong, Hong Kong, China;

    Department of Physics and Center of Theoretical and Computational Physics, University of Hong Kong, Hong Kong, China,Department of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China;

    Department of Physics and Center of Theoretical and Computational Physics, University of Hong Kong, Hong Kong, China,Department of Physics, South University of Science and Technology of China, Shenzhen, Guangdong 518055, China;

    Department of Physics, South University of Science and Technology of China, Shenzhen, Guangdong 518055, China;

    Department of Physics, Zhejiang University, Hangzhou 310058, China;

    Department of Physics and Center of Theoretical and Computational Physics, University of Hong Kong, Hong Kong, China,Department of Physics, Zhejiang University, Hangzhou 310058, China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    lattice fermion models (hubbard model, etc.); spin-orbit coupling, zeeman and stark splitting, jahn-teller effect; superconductivity phase diagrams; electron states at surfaces and interfaces;

    机译:格子费米子模型(哈伯德模型等);自旋轨道耦合;塞曼和斯塔克分裂;詹恩-泰勒效应;超导相图;表面和界面的电子态;

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