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MoTe 2 : A Type-II Weyl Topological Metal

Author(s): Wang, Zhijun; Gresch, Dominik; Soluyanov, Alexey A.; Xie, Weiwei; Kushwaha, Satya Kumar; et al

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Abstract: Based on the ab initio calculations, we show that MoTe2, in its low-temperature orthorhombic structure characterized by an x-ray diffraction study at 100 K, realizes 4 type-II Weyl points between the Nth and (N±1)th bands, where N is the total number of valence electrons per unit cell. Other WPs and nodal lines between different other bands also appear close to the Fermi level due to a complex topological band structure. We predict a series of strain-driven topological phase transitions in this compound, opening a wide range of possible experimental realizations of different topological semimetal phases. Crucially, with no strain, the number of observable surface Fermi arcs in this material is 2 - the smallest number of arcs consistent with time-reversal symmetry. © 2016 American Physical Society.
Publication Date: Jul-2016
Electronic Publication Date: 27-Jul-2016
Citation: Wang, Zhijun, Gresch, Dominik, Soluyanov, Alexey A., Xie, Weiwei, Kushwaha, S., Dai, Xi, Troyer, Matthias, Cava, Robert J., Bernevig, B. Andrei. (2016). : A Type-II Weyl Topological Metal. Physical Review Letters, 117 (5), 10.1103/PhysRevLett.117.056805,1-5.
DOI: doi:10.1103/PhysRevLett.117.056805
ISSN: 0031-9007
EISSN: 1079-7114
Pages: 117.5:056805-1-056805-5
Type of Material: Journal Article
Journal/Proceeding Title: Physical Review Letters
Version: Final published version. This is an open access article.
Notes: Physical Review Letters. Volume 117, Issue 5, 27 July 2016, Article number 056805.

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