| Title | Topological superconductivity in Janus monolayer transition metal dichalcogenides |
| Author | |
| Corresponding Author | Yu, Zuo-Dong; Chen, Wei-Peng |
| Publication Years | 2022-11-01
|
| DOI | |
| Source Title | |
| ISSN | 1674-1056
|
| EISSN | 2058-3834
|
| Volume | 31Issue:11 |
| Abstract | The Janus monolayer transition metal dichalcogenides (TMDs) MXY (M = Mo, W, etc. and X, Y = S, Se, etc.) have been successfully synthesized in recent years. The Rashba spin splitting in these compounds arises due to the breaking of out-of-plane mirror symmetry. Here we study the pairing symmetry of superconducting Janus monolayer TMDs within the weak-coupling framework near critical temperature T (c), of which the Fermi surface (FS) sheets centered around both Gamma and K (K ') points. We find that the strong Rashba splitting produces two kinds of topological superconducting states which differ from that in its parent compounds. More specifically, at relatively high chemical potentials, we obtain a time-reversal invariant s + f + p-wave mixed superconducting state, which is fully gapped and topologically nontrivial, i.e., a DOUBLE-STRUCK CAPITAL Z(2) topological state. On the other hand, a time-reversal symmetry breaking d + p + f-wave superconducting state appears at lower chemical potentials. This state possess a large Chern number |C| = 6 at appropriate pairing strength, demonstrating its nontrivial band topology. Our results suggest the Janus monolayer TMDs to be a promising candidate for the intrinsic helical and chiral topological superconductors. |
| Keywords | |
| URL | [Source Record] |
| Indexed By | |
| Language | English
|
| SUSTech Authorship | Corresponding
|
| Funding Project | [11904155]
|
| WOS Research Area | Physics
|
| WOS Subject | Physics, Multidisciplinary
|
| WOS Accession No | WOS:000880114300001
|
| Publisher | |
| Data Source | Web of Science
|
| Citation statistics |
Cited Times [WOS]:1
|
| Document Type | Journal Article |
| Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/412162 |
| Department | Institute for Quantum Science and Engineering |
| Affiliation | 1.Nanjing Univ, Dept Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China 2.Zhejiang Gongshang Univ, Sch Informat & Elect Engn, Hangzhou 310018, Peoples R China 3.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China 4.Zhejiang Normal Univ, Ctr Stat & Theoret Condensed Matter Phys, Jinhua 321004, Peoples R China 5.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China |
| Corresponding Author Affilication | Institute for Quantum Science and Engineering |
| Recommended Citation GB/T 7714 |
Li, Xian-Dong,Yu, Zuo-Dong,Chen, Wei-Peng,et al. Topological superconductivity in Janus monolayer transition metal dichalcogenides[J]. Chinese Physics B,2022,31(11).
|
| APA |
Li, Xian-Dong,Yu, Zuo-Dong,Chen, Wei-Peng,&Gong, Chang-De.(2022).Topological superconductivity in Janus monolayer transition metal dichalcogenides.Chinese Physics B,31(11).
|
| MLA |
Li, Xian-Dong,et al."Topological superconductivity in Janus monolayer transition metal dichalcogenides".Chinese Physics B 31.11(2022).
|
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