期刊
PHYSICAL REVIEW LETTERS
卷 108, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.087003
关键词
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资金
- Ministry of Education, Culture, Sports, Science and Technology of Japan [17071007, 17071005, 19048008, 19048015, 22103005, 22340096, 21244053]
- Japan Science and Technology Agency
- Funding Program for World-Leading Innovative RD on Science and Technology (FIRST Program)
- Grants-in-Aid for Scientific Research [17071007, 22340096, 22103005] Funding Source: KAKEN
We study Andreev bound states (ABS) and the resulting charge transport of a Rashba superconductor (RSC) where two-dimensional semiconductor (2DSM) heterostructures are sandwiched by spin-singlet s-wave superconductor and ferromagnet insulator. ABS becomes a chiral Majorana edge mode in the topological phase (TP). We clarify two types of quantum criticality about the topological change of ABS near a quantum critical point (QCP), whether or not ABS exists at QCP. In the former type, ABS has an energy gap and does not cross at zero energy in the nontopological phase. These complex properties can be detected by tunneling conductance between normal metal-RSC junctions.
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