KMS Shanghai Institute of Ceramics,Chinese Academy of Sciences
Discovery of Superconductivity in 2M WS2 with Possible Topological Surface States | |
Fang, Yuqiang; Pan, Jie; Zhang, Dongqin; Wang, Dong; Hirose, Hishiro T.; Terashima, Taichi; Uji, Shinya; Yuan, Yonghao; Li, Wei; Tian, Zhen; Xue, Jiamin; Ma, Yonghui; Zhao, Wei; Xue, Qikun; Mu, Gang; Zhang, Hawn; Huang, Fuqiang | |
2019-07-01 | |
Source Publication | ADVANCED MATERIALS
![]() |
ISSN | 0935-9648 |
Volume | 31Issue:30 |
Subtype | Article |
Abstract | Recently the metastable 1T '-type VIB-group transition metal dichalcogenides (TMDs) have attracted extensive attention due to their rich and intriguing physical properties, including superconductivity, valleytronics physics, and topological physics. Here, a new layered WS2 dubbed "2M" WS2, is constructed from 1T ' WS2 monolayers, is synthesized. Its phase is defined as 2M based on the number of layers in each unit cell and the subordinate crystallographic system. Intrinsic superconductivity is observed in 2M WS2 with a transition temperature T-c of 8.8 K, which is the highest among TMDs not subject to any fine-tuning process. Furthermore, the electronic structure of 2M WS2 is found by Shubnikov-de Haas oscillations and first-principles calculations to have a strong anisotropy. In addition, topological surface states with a single Dirac cone, protected by topological invariant Z(2), are predicted through first-principles calculations. These findings reveal that the new 2M WS2 might be an interesting topological superconductor candidate from the VIB-group transition metal dichalcogenides. |
Keyword | 2M WS2 superconductivity topological surface states |
DOI | 10.1002/adma.201901942 |
Language | 英语 |
WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
Publisher | WILEY-V C H VERLAG GMBH |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.sic.ac.cn/handle/331005/26994 |
Collection | 中国科学院上海硅酸盐研究所 |
Recommended Citation GB/T 7714 | Fang, Yuqiang,Pan, Jie,Zhang, Dongqin,et al. Discovery of Superconductivity in 2M WS2 with Possible Topological Surface States[J]. ADVANCED MATERIALS,2019,31(30). |
APA | Fang, Yuqiang.,Pan, Jie.,Zhang, Dongqin.,Wang, Dong.,Hirose, Hishiro T..,...&Huang, Fuqiang.(2019).Discovery of Superconductivity in 2M WS2 with Possible Topological Surface States.ADVANCED MATERIALS,31(30). |
MLA | Fang, Yuqiang,et al."Discovery of Superconductivity in 2M WS2 with Possible Topological Surface States".ADVANCED MATERIALS 31.30(2019). |
Files in This Item: | There are no files associated with this item. |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment