Lifshitz Transitions Induced by Temperature and Surface Doping in Type-II Weyl Semimetal Candidate Td-WTe2

Zhang Q, Liu Z, Sun Y, Yang H, Jiang J, Mo SK, Hussain Z, Qian X, Fu L, Yao S, Lu M, Felser C, Yan B, Chen Y, Yang L (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Physica Status Solidi-Rapid Research Letters Wiley-VCH Verlag

Book Volume: 11

Article Number: 1700209

Journal Issue: 12

DOI: 10.1002/pssr.201700209

Abstract

Using high resolution angle-resolved photoemission spectroscopy, we systematically investigate the electronic structure of Td-WTe2, which has attracted substantial research attention due to its diverse and fascinating properties, especially the predicted type-II topological Weyl semimetal (TWS) phase. The observed significant lattice contraction and the fact that our ARPES measurements are well reproduced by our ab initio calculations under reduced lattice constants support the theoretical prediction of a type-II TWS phase in Td-WTe2 at temperatures below 10 K. We also investigate the evolution of the electronic structure of Td-WTe2 and realize two-stage Lifshitz transitions induced by temperature regulation and surface modification, respectively. Our results not only shed light on the understanding of the electronic structure of Td-WTe2, but also provide a promising method to manipulate the electronic structures and physical properties of the type-II TWS Td-XTe2.

Involved external institutions

Lawrence Berkeley National Laboratory (LBNL) US United States (USA) (US) Tsinghua University CN China (CN) ShanghaiTech University / 上海科技大学 CN China (CN) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) University of Oxford GB United Kingdom (GB) Texas A&M University US United States (USA) (US) Massachusetts Institute of Technology (MIT) US United States (USA) (US) Nanjing University CN China (CN)

How to cite

APA:

Zhang, Q., Liu, Z., Sun, Y., Yang, H., Jiang, J., Mo, S.-K.,... Yang, L. (2017). Lifshitz Transitions Induced by Temperature and Surface Doping in Type-II Weyl Semimetal Candidate Td-WTe2. Physica Status Solidi-Rapid Research Letters, 11(12). https://doi.org/10.1002/pssr.201700209

MLA:

Zhang, Qihang, et al. "Lifshitz Transitions Induced by Temperature and Surface Doping in Type-II Weyl Semimetal Candidate Td-WTe2." Physica Status Solidi-Rapid Research Letters 11.12 (2017).

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