Title | Topological superconductivity in Janus monolayer transition metal dichalcogenides |
Author | |
Corresponding Author | Yu, Zuo-Dong; Chen, Wei-Peng |
Publication Years | 2022-11-01
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DOI | |
Source Title | |
ISSN | 1674-1056
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EISSN | 2058-3834
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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
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SUSTech Authorship | Corresponding
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Funding Project | [11904155]
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WOS Research Area | Physics
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WOS Subject | Physics, Multidisciplinary
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WOS Accession No | WOS:000880114300001
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Publisher | |
Data Source | Web of Science
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Citation statistics |
Cited Times [WOS]:0
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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).
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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).
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MLA |
Li, Xian-Dong,et al."Topological superconductivity in Janus monolayer transition metal dichalcogenides".Chinese Physics B 31.11(2022).
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