期刊
PHYSICAL REVIEW LETTERS
卷 121, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.121.186801
关键词
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资金
- ARO [W911NF-18-1-0416]
- UTD research enhancement funds
- NSF [DMR-1653769]
- NSFC [11774028]
- BIT basic research funds [2017CX01018]
Majorana bound states often occur at the end of a 1D topological superconductor. Validated by a new bulk invariant and an intuitive edge argument, we show the emergence of one Majorana Kramers pair at each corner of a square-shaped 2D topological insulator proximitized by an s(+/-)-wave (e.g., Fe-based) superconductor. We obtain a phase diagram that addresses the relaxation of crystal symmetry and edge orientation. We propose two experimental realizations in candidate materials. Our scheme offers a higher-order and higher-temperature route for exploring non-Abelian quasiparticles.
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