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  Prediction of Weyl semimetal in orthorhombic MoTe2

Sun, Y., Wu, S.-C., Ali, M. N., Felser, C., & Yan, B. (2015). Prediction of Weyl semimetal in orthorhombic MoTe2. Physical Review B, 92(16): 161107, pp. 1-7. doi:10.1103/PhysRevB.92.161107.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-F0AE-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-1826-A
Genre: Journal Article

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 Creators:
Sun, Yan1, Author              
Wu, Shu-Chun1, Author              
Ali, Mazhar N.2, Author
Felser, Claudia3, Author              
Yan, Binghai4, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              
4Binghai Yan, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863427              

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 Abstract: We investigate the orthorhombic phase (T-d) of the layered transition-metal dichalcogenide MoTe2 as a Weyl semimetal candidate. MoTe2 exhibits four pairs of Weyl points lying slightly above (similar to 6meV) the Fermi energy in the bulk band structure. Different from its cousin WTe2, which was recently predicted to be a type-II Weyl semimetal, the spacing between each pair of Weyl points is found to be as large as 4% of the reciprocal lattice in MoTe2 (six times larger than that of WTe2). When projected onto the surface, the Weyl points are connected by Fermi arcs, which can be easily accessed by angle-resolved photoemission spectroscopy due to the large Weyl point separation. In addition, we show that the correlation effect or strain can drive MoTe2 from a type-II to a type-I Weyl semimetal.

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Language(s): eng - English
 Dates: 2015-10-092015-10-09
 Publication Status: Published in print
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 Table of Contents: -
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 92 (16) Sequence Number: 161107 Start / End Page: 1 - 7 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008