Bulk superconductivity in the Dirac semimetal TlSb

作     者：YuXing Zhou Bin Li ZheFeng Lou HuanCheng Chen Qin Chen BinJie Xu ChunXiang Wu JianHua Du JinHu Yang HangDong Wang MingHu Fang YuXing Zhou;Bin Li;ZheFeng Lou;HuanCheng Chen;Qin Chen;BinJie Xu;ChunXiang Wu;JianHua Du;JinHu Yang;HangDong Wang;MingHu Fang

作者机构：Department of PhysicsZhejiang UniversityHangzhou 310027China New Energy Technology Engineering Laboratory of Jiangsu ProvinceSchool of ScienceNanjing University of Posts and TelecommunicationsNanjing 210023China Department of Applied PhysicsChina Jiliang UniversityHangzhou 310018China Department of PhysicsHangzhou Normal UniversityHangzhou 310036China Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2021年第64卷第4期

页      面：96-103页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：supported by the National Key Program of China(Grant No.2016YFA0300402) the National Natural Science Foundation of China(Grant Nos.12074335,and 11974095) the Fundamental Research Funds for the Central Universities an open program from the National Lab of Solid-State Microstructures of Nanjing University(Grant No.M32025) 

主　　题：s-wave superconductor Dirac semimetal topological superconductor 

摘      要：A feasible strategy for realizing the Majorana fermions is searching for a simple compound with both bulk superconductivity and Dirac surface *** this paper,we perform calculations of electronic band structure,the Fermi surface,and the surface states,and measure the resistivity,magnetization,and specific heat of a TlSb compound with a CsCl-type *** band structure calculations show that TlSb is a Dirac semimetal when spin-orbit coupling is *** is first determined to be a type-Ⅱsuperconductor with T_(c)=4.38 K,Hc1(0)=148 Oe,H_(c2)(0)=1.12 T,andκ_(GL)=*** also confirm that TlSb is a moderately coupled s-wave *** we cannot determine the band near the Fermi level EF that is responsible for superconductivity,its coexistence with topological surface states implies that the TlSb compound may be a simple material platform to realize the fault-tolerant quantum computations.