Tip-induced superconductivity on the topological semimetals TaAs2 and NbAs2
文献类型：期刊论文
| 作者 | Zhang, Meng-Di3,4; Hou, Xing-Yuan3,5; Wang, Qing6,7; Wang, Yi-Yan3; Zhao, Ling-Xiao3; Wang, Zong3,4; Gu, Ya-Dong3,4; Zhang, Fan3,4; Xia, Tian-Long1; Ren, Zhi-An2,3,4 |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2020-08-19 |
| 卷号 | 102 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.102.085139 |
| 通讯作者 | Chen, Gen-Fu(gfchen@iphy.ac.cn) |
| 英文摘要 | TaAs2 and NbAs2 are members of the MPn(2) family with weak topological invariants of Z(2) = [0;111]. Here, we report the tip-induced superconductivity achieved on both materials using the point-contact technique. Although the weak Z(2) number leads to strongly crystal-orientation-dependent surface states, we observed a universal relationship between the zero-temperature upper critical field H-c2(0) and the critical temperature T-c for different crystal orientations. Combined with first-principles calculations, the findings here could identify a bulk band, instead of the much speculated surface bands, playing the dominant role in the induced superconductivity. These results predict a great possibility to realize superconductivity in other members of the MPn(2) family possessing similar band structures and provide clues to understand the mechanism of tip-induced superconductivity. |
| 资助项目 | National Key R&D Program of China[2018YFA0305602] ; National Key R&D Program of China[2017YFA0302904] ; National Key R&D Program of China[2016YFA0300604] ; National Key R&D Program of China[2017YFA0303201] ; National Natural Science Foundation of China[11574372] ; National Natural Science Foundation of China[11674331] ; National Natural Science Foundation of China[11804379] ; National Natural Science Foundation of China[11874417] ; National Basic Research Program of China 973 Program[2015CB921303] ; Chinese Academy of Sciences[XDB33030100] ; 100 Talents Project of the Chinese Academy of Sciences ; CASHIPS Director's Fund[BJPY2019B03] ; Recruitment Program for Leading Talent Team of Anhui Province[2019-16] ; High Magnetic Field Laboratory of Anhui Province |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000560606300005 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; National Basic Research Program of China 973 Program ; Chinese Academy of Sciences ; 100 Talents Project of the Chinese Academy of Sciences ; CASHIPS Director's Fund ; Recruitment Program for Leading Talent Team of Anhui Province ; High Magnetic Field Laboratory of Anhui Province |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/43120]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Chen, Gen-Fu |
| 作者单位 | 1.Renmin Univ China, Dept Phys, Beijing Key Lab Optoelect Funct Mat & Micronano, Beijing 100872, Peoples R China 2.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China 3.Chinese Acad Sci, Inst Phys, Betjing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100190, Peoples R China 5.Anhui Univ, Inst Phys Sci & Informat Technol, Minist Educ, Key Lab Struct & Funct Regulat Hybrid Mat, Hefei 230601, Peoples R China 6.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Magnet Field Lab, Hefei 230031, Peoples R China 7.Univ Sci & Technol China, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Meng-Di,Hou, Xing-Yuan,Wang, Qing,et al. Tip-induced superconductivity on the topological semimetals TaAs2 and NbAs2[J]. PHYSICAL REVIEW B,2020,102. |
| APA | Zhang, Meng-Di.,Hou, Xing-Yuan.,Wang, Qing.,Wang, Yi-Yan.,Zhao, Ling-Xiao.,...&Shan, Lei.(2020).Tip-induced superconductivity on the topological semimetals TaAs2 and NbAs2.PHYSICAL REVIEW B,102. |
| MLA | Zhang, Meng-Di,et al."Tip-induced superconductivity on the topological semimetals TaAs2 and NbAs2".PHYSICAL REVIEW B 102(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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