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Title: Transport evidence of asymmetric spin–orbit coupling in few-layer superconducting 1Td-MoTe2
Authors: Cui, Jian
Li, Peiling
Zhou, Jiadong
He, Wen-Yu
Huang, Xiangwei
Yi, Jian
Fan, Jie
Ji, Zhongqing
Jing, Xiunian
Qu, Fanming
Cheng, Zhi Gang
Yang, Changli
Lu, Li
Suenaga, Kazu
Liu, Junwei
Law, Kam Tuen
Lin, Junhao
Liu, Zheng
Liu, Guangtong
Keywords: Superconducting Properties and Materials
Spin–orbit Coupling
Issue Date: 2019
Source: Cui, J., Li, P., Zhou, J., He, W.-Y., Huang, X., Yi, J., . . . Liu, G. (2019). Transport evidence of asymmetric spin–orbit coupling in few-layer superconducting 1Td-MoTe2. Nature Communications, 10(1), 2044-. doi:10.1038/s41467-019-09995-0
Series/Report no.: Nature Communications
Abstract: Two-dimensional transition metal dichalcogenides MX2 (M = W, Mo, Nb, and X = Te, Se, S) with strong spin–orbit coupling possess plenty of novel physics including superconductivity. Due to the Ising spin–orbit coupling, monolayer NbSe2 and gated MoS2 of 2H structure can realize the Ising superconductivity, which manifests itself with in-plane upper critical field far exceeding Pauli paramagnetic limit. Surprisingly, we find that a few-layer 1Td structure MoTe2 also exhibits an in-plane upper critical field which goes beyond the Pauli paramagnetic limit. Importantly, the in-plane upper critical field shows an emergent two-fold symmetry which is different from the isotropic in-plane upper critical field in 2H transition metal dichalcogenides. We show that this is a result of an asymmetric spin–orbit coupling in 1Td transition metal dichalcogenides. Our work provides transport evidence of a new type of asymmetric spin–orbit coupling in transition metal dichalcogenides which may give rise to novel superconducting and spin transport properties.
DOI: 10.1038/s41467-019-09995-0
Rights: © 2019 The Author(s). Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
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