Open AccessTheory of topological superconductivity based on Yu-Shiba-Rusinov states
Author(s) -
李牮
Publication year - 2020
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.69.20200831
Subject(s) - superconductivity , physics , bound state , topology (electrical circuits) , condensed matter physics , proximity effect (electron beam lithography) , impurity , quantum mechanics , nanotechnology , combinatorics , mathematics , materials science , layer (electronics) , resist , electron beam lithography
Yu-Shiba-Rusinov states are subgap bound states induced by magnetic impurity atoms in a superconductor. These states can be used as building blocks in constructing an effective topological superconductor. Here we formulate a unified theory of topological superconductivity in different dimensions based on Yu-Shiba-Rusinov states, and demonstrate its application with simple but illustrative examples. Such a theory underlies a number of recent experiments on the related platform.