物理学进展2021，Vol.41Issue(3)：113-135,23.DOI:10.13725/j.cnki.pip.2021.03.001
拓扑绝缘体/超导体异质结中的近邻效应
Proximity effect in topological insulator/superconductor heterostructure
摘要
Abstract
Topological superconductors have attracted increasing attentions for the pur-pose of the quantum computation, because the character of supporting topological qubits are immune to quantum decoherence and can be manipulated by braiding operation. Since the topological superconducting state is rather rare in the intrinsic topological superconductors, most of experimental efforts focus on inducing topological superconductors by the proximity effect in superconductor (SC)/topological insulator (TI) heterostructures. Fu and Kane have theoretically proposed that the topological superconductivity can be obtained by inducing an s-wave superconducting gap into TIs. After that, a lot of experimental progress has been made in different systems. In thefirst part of this review, we introduce the heterostructure of three-dimensional (3D) TI Bi2Se3 and Bi2Te3 on s-wave SC NbSe2 and d-wave SC Bi2Sr2CaCu2O8+δ, topological crystalline insulator Sn1?xPbxTe on Pb, two-dimensional (2D) TI WTe2 on NbSe2, and TiBiSe2 on Pb. In the second part, the TI-based Josephson junctions are reviewed by in-troducing various experiments, including the Josephson junctions with TI barrier layers based on the Fu-Kane mode, and the superconducting quantum interference devices by TI based Josephson junctions.关键词
近邻效应/拓扑超导体/异质结/约瑟夫森结Key words
proximity effect/topological superconductor/heterostructure/Josephson junction分类
数理科学引用本文复制引用
贺家电,王志,李军,丁逸凡,滕博伦,董鹏,李逸飞,张忆文,吴越珅,王靖珲,周翔..拓扑绝缘体/超导体异质结中的近邻效应[J].物理学进展,2021,41(3):113-135,23.基金项目
This research was supported in part by the National Natural Science Foundation of China(Nos.61771234,12004251),National Key Projects for Research and Development of China(No.2017YFB0503302),the Natural Science Foundation of Shanghai(No.20ZR1436100),the Science and Technol-ogy Commission of Shanghai Municipality,the startup funding from ShanghaiTech University,and Beijing Na-tional Laboratory for Condensed Matter Physics. （Nos.61771234,12004251）
