摘要
Majorana fermions have been predicted to exist at the edge states of a two-dimensional topological superconductor.We fabricated single quintuple layer(QL)Bi2Te3/FeTe heterostructure with the step-flow epitaxy method and studied the topological properties of this system by using angle-resolved photoemission spectroscopy and scanning tunneling microscopy/spectroscopy.We observed the coexistence of robust superconductivity and edge states on the single QL Bi2Te3 islands which can be potential evidence for topological superconductor.
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.61734008 and 11774143)
the National Key Research and Development Program of China(Grant Nos.2018YFA0307100,2016YFA0301703,and 2016YFA0300300)
the Natural Science Foundation of Guangdong Province,China(Grant Nos.2015A030313840 and 2017A030313033)
the State Key Laboratory of Low-Dimensional Quantum Physics(Grant No.KF201602)
Technology and Innovation Commission of Shenzhen Municipality,China(Grant Nos.ZDSYS20170303165926217 and JCYJ20170412152334605)
Guangdong Provincial Key Laboratory,China(Grant No.2019B121203002)
J.-W.M.was partially supported by the Program for Guangdong Introducing Innovative and Entrepreneurial Teams,China(Grant No.2017ZT07C062).
