摘要
Two dimenslonal(2D)topological insulators(TIs)and topological superonductors(TSC&)have been intensively studied for recent yars due to their great poterntial for dissipat iouless eloctron transporta-tion and fault-tolerant quantum computing,respectively.Here we focus on stanene,the tin analogue of grapbene,to give a brief review of their development a a candidate for both 2D TI and TSC.Stanene is proposed to bea TI with a large gap of 0.3 eW,and its topological properties are sensitive to various factors,e.g..the lattice constants,chemical functionalization and layer thickness,which offer various methods for phase tunning.Experimentally,the inverted gap and edge states are observed recently,which are strong evidences for TI.In addition,stanene is also predicted to be a time reversal invariant TSC by breaking inversion syumetry,supporting belical Majorana edge modes.The layer dependent superconduetivity of stanene is receatly confirmed by both transport and scauning tumeling microsoopy measurenents.This review givs a detailod introduction to stanene and its topological properties and some proepects are also discussed.
作者
Chen-Xiao Zhao
Jin-Feng Ji
赵晨晓;贾金锋(Key Laboratory of Artificial Structures and Quantum Control(Ministry of Education),School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China;Tsung-Dao Lee Institute,Shanghai Jiao Tong University,Shanghai 200240,China;CAS Center for Excellence in Topological Quantum Computation,University of Chinese Academy of Sciences,Beijing 100190,China)
基金
the National Natural Science Foundation of China(Grant Nos.11521404,11634009,11674222,11674226,11790313,11574202,11874256,U1632102,11861161003,and 11874258)
the National Key Research and Development Program of China(Grant Nos.2016YFA0300403 and 2016YFA0301003)
the Key Research Program of the Chinese Academy of Sciences(Grant No.XDPB08-2)
the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB28000000).
