Majorana corner states in a two-dimensional magnetic topological insulator on a high-temperature superconductor

  title={Majorana corner states in a two-dimensional magnetic topological insulator on a high-temperature superconductor},
  author={Tao Liu and James Jun He and Franco Nori},
  journal={Physical Review B},
Conventional $n$-dimensional topological superconductors (TSCs) have protected gapless $(n - 1)$-dimensional boundary states. In contrast to this, second-order TSCs are characterized by topologically protected gapless $(n - 2)$-dimensional states with usual gapped $(n - 1)$-boundaries. Here, we study a second-order TSC with a two-dimensional (2D) magnetic topological insulator (TI) proximity-coupled to a high-temperature superconductor, where Majorana bound states (MBSs) are localized at the… 

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