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  Optical conductivity of the type-II Weyl semimetal WTe2 under pressure

Krottenmüller, M., Ebad-Allah, J., Süss, V., Felser, C., & Kuntscher, C. A. (2020). Optical conductivity of the type-II Weyl semimetal WTe2 under pressure. Physical Review B, 102(7): 075122, pp. 1-9. doi:10.1103/PhysRevB.102.075122.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-0C13-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-0C15-5
Genre: Journal Article

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Krottenmüller, M.1, Author
Ebad-Allah, J.1, Author
Süss, V.2, Author              
Felser, C.3, Author              
Kuntscher, C. A.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: Tungsten ditelluride WTe2 is a type-II Weyl semimetal with electronic properties highly sensitive to external pressure, as demonstrated by the superconductivity emerging under pressure. Here we study the optical conductivity of the type-II Weyl semimetal WTe2 under external pressure at room temperature. With increasing pressure, a pronounced spectral weight transfer occurs from the high-energy to the low-energy interband transitions, with drastic changes in the profile of the optical conductivity spectrum indicating a high sensitivity of the electronic band structure to external pressure. The detailed analysis of the pressure-dependent optical conductivity furthermore reveals anomalies at the pressures similar to 2 and similar to 4.5 GPa, where an electronic and a structural phase transition, respectively, were reported in the literature.

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Language(s): eng - English
 Dates: 2020-08-172020-08-17
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
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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: 102 (7) Sequence Number: 075122 Start / End Page: 1 - 9 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008