Edge superconducting correlation in the attractive-UKane-Mele-Hubbard model

2012/01/09 by Jie Yuan, Yuan Jie, Jin-Hua Gao +5 · 8 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Ground state #Hubbard model #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Superconductivity #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.86.104505

published in Physical Review B 86(10) (American Physical Society) · 6 pages, 4 figures

arxiv created 2012/01/09 · openalex publication_date 2012/09/04 · arxiv updated 2013/05/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

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.

Citations

• Inverse Spin-Galvanic Effect in the Interface between a Topological Insulator and a Ferromagnet
• High-temperature surface superconductivity in topological flat-band systems
• Topological insulators and superconductors
• Quantum Spin Hall Effect in Graphene
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• The birth of topological insulators
• Topological Insulators