摘要
We report the tip-induced superconductivity on the topological semimetal NbSb_(2), similar to the observation on TaAs_(2) and NbAs_(2). Belonging to the same family of MPn_(2), all these materials possess similar band structures, indicating that the tip-induced superconductivity may be closely related to their topological nature and share a common mechanism. Further analysis suggests that a bulk band should play the dominant role in such local superconductivity most likely through interface coupling. In addition, the compatibility between the induced superconductivity and tips’ ferromagnetism gives an evidence for its unconventional nature. These results provide further clues to elucidate the mechanism of the tip-induced superconductivity observed in topological materials.
作者
Meng-Di Zhang
Sheng Xu
Xing-Yuan Hou
Ya-Dong Gu
Fan Zhang
Tian-Long Xia
Zhi-An Ren
Gen-Fu Chen
Ning Hao
Lei Shan
张孟迪;徐升;侯兴元;谷亚东;张凡;夏天龙;任治安;陈根富;郝宁;单磊(Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China;Department of Physics,Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices,Renmin University of China,Beijing 100872,China;Songshan Lake Materials Laboratory,Dongguan 523808,China;Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions,High Magnetic Field Laboratory,Chinese Academy of Sciences,Hefei 230031,China;Information Materials and Intelligent Sensing Laboratory of Anhui Province,Institute of Physical Science and Information Technology,Anhui University,Hefei 230601,China;Key Laboratory of Structure and Functional Regulation of Hybrid Materials(Anhui University),Ministry of Education,Hefei 230601,China)
基金
Project supported by the National Key R&D Program of China(Grant Nos.2017YFA0302904,2017YFA0303201,2018YFA0305602,and 2016YFA0300604)
the National Natural Science Foundation of China(Grants Nos.12074002,11574372,11674331,11804379,and 11874417)
the National Basic Research Program of China(Grant No.2015CB921303)
the Strategic Priority Research Program(B)of the Chinese Academy of Sciences(Grants Nos.XDB07020300,XDB07020100,and XDB33030100)
the Collaborative Innovation Program of Hefei Science Center,the Chinese Academy of Sciences(Grant No.2020HSCCIP002)
CASHIPS Director’s Fund,China(Grant No.BJPY2019B03)
the Recruitment Program for Leading Talent Team of Anhui Province,China(2019-16)。
