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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 PublicationADVANCED MATERIALS
ISSN0935-9648
Volume31Issue:30
SubtypeArticle
AbstractRecently 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.
Keyword2M WS2 superconductivity topological surface states
DOI10.1002/adma.201901942
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://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).
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