Optical conductivity of the type-II Weyl semimetal WTe2 under pressure
Krottenmueller M, Ebad-Allah J, Suess , Felser C, Kuntscher CA (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 102
Article Number: 075122
Journal Issue: 7
DOI: 10.1103/PhysRevB.102.075122
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 ∼2 and ∼4.5GPa, where an electronic and a structural phase transition, respectively, were reported in the literature.
Involved external institutions
Universität Augsburg
Germany (DE)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
Germany (DE)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
How to cite
APA:
Krottenmueller, M., Ebad-Allah, J., Suess, ., Felser, C., & Kuntscher, C.A. (2020). Optical conductivity of the type-II Weyl semimetal WTe2 under pressure. Physical Review B, 102(7). https://doi.org/10.1103/PhysRevB.102.075122
MLA:
Krottenmueller, M., et al. "Optical conductivity of the type-II Weyl semimetal WTe2 under pressure." Physical Review B 102.7 (2020).
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