Signature of type-II Weyl semimetal phase in MoTe 2

Jiang J, Liu ZK, Sun Y, Yang HF, Rajamathi CR, Qi YP, Yang LX, Chen C, Peng H, Hwang CC, Sun SZ, Mo SK, Vobornik I, Fujii J, Parkin SSP, Felser C, Yan BH, Chen YL (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Nature Communications Nature Publishing Group: Nature Communications

Book Volume: 8

Article Number: 13973

DOI: 10.1038/ncomms13973

Abstract

Topological Weyl semimetal (TWS), a new state of quantum matter, has sparked enormous research interest recently. Possessing unique Weyl fermions in the bulk and Fermi arcs on the surface, TWSs offer a rare platform for realizing many exotic physical phenomena. TWSs can be classified into type-I that respect Lorentz symmetry and type-II that do not. Here, we directly visualize the electronic structure of MoTe 2, a recently proposed type-II TWS. Using angle-resolved photoemission spectroscopy (ARPES), we unravel the unique surface Fermi arcs, in good agreement with our ab initio calculations that have nontrivial topological nature. Our work not only leads to new understandings of the unusual properties discovered in this family of compounds, but also allows for the further exploration of exotic properties and practical applications of type-II TWSs, as well as the interplay between superconductivity (MoTe 2 was discovered to be superconducting recently) and their topological order.

Involved external institutions

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) Tsinghua University CN China (CN) University of Science and Technology of China (USTC) CN China (CN) Max-Planck-Institut für Mikrostrukturphysik (MSP) / Max Planck Institute for Microstructure Physics DE Germany (DE) Pohang University of Science and Technology (POSTECH) KR Korea, Republic of (KR) Consiglio Nazionale delle Ricerche (CNR) / National Research Council of Italy IT Italy (IT)

How to cite

APA:

Jiang, J., Liu, Z.K., Sun, Y., Yang, H.F., Rajamathi, C.R., Qi, Y.P.,... Chen, Y.L. (2017). Signature of type-II Weyl semimetal phase in MoTe 2. Nature Communications, 8. https://doi.org/10.1038/ncomms13973

MLA:

Jiang, J., et al. "Signature of type-II Weyl semimetal phase in MoTe 2." Nature Communications 8 (2017).

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