Coexistence of superconductivity and topological phase in kagome metals ANb_(3)Bi_(5)(A=K,Rb,Cs)  

作　　者：Jianguo Si Lanting Shi Bozhu Chen Huanhuan Yang Jiyu Xu Miao Liu Sheng Meng 

机构地区：[1]Songshan Lake Materials Laboratory,Dongguan,Guangdong 523808,People’s Republic of China [2]Beijing National Laboratory for Condensed Matter Physics and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,People’s Republic of China [3]Institute of High Energy Physics,Chinese Academy of Science,Beijing 100049,People’s Republic of China [4]University of Chinese Academy of Sciences,Beijing 100049,People’s Republic of China

出　　处：《npj Computational Materials》2024年第1期2226-2233,共8页计算材料学(英文)

基　　金：supported by National Natural Science Foundation of China(Grant Nos.12304095,12025407,11974400 and 12204513);Ministry of Science and Technology of the Peoples Republic of China(Grant Nos.2021YFA0718700 and 2021YFA1400201);Chinese Academy of Sciences(Grant Nos.XDB330301,CAS-WX2023SF-0101 and YSBR047);Guangdong Basic and Applied Basic Research Foundation(Grant Nos.2023A1515140188 and 2022A1515110404).

摘　　要：The AV_(3)Sb_(5)prototype kagomematerials have been demonstrated as a versatile platform for exploring exotic properties in condensed matter physics,including charge density waves,superconductivity,non-trivial electron topology,as well as topological superconductivity.Here we identify that ANb_(3)Bi_(5)(A=K,Rb,Cs)exhibit non-trivial coexisting superconductivity and topological properties via firstprinciples calculations.The negative formation energy and the absence of imaginary phonon dispersion demonstrate both thermodynamics and dynamics stabilities of ANb_(3)Bi_(5)(A=K,Rb,Cs)under ambient conditions.

关 键 词：TOPOLOGICAL SUPERCONDUCTIVITY TRIVIAL 

分 类 号：O57[理学—粒子物理与原子核物理]