Magneto-Optics of a Weyl Semimetal beyond the Conical Band Approximation: Case Study of TaP
Polatkan S, Goerbig MO, Wyzula J, Kemmler R, Maulana LZ, Piot BA, Crassee , Akrap A, Shekhar C, Felser C, Dressel M, Pronin AV, Orlita M (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 124
Article Number: 176402
Journal Issue: 17
DOI: 10.1103/PhysRevLett.124.176402
Abstract
Landau-level spectroscopy, the optical analysis of electrons in materials subject to a strong magnetic field, is a versatile probe of the electronic band structure and has been successfully used in the identification of novel states of matter such as Dirac electrons, topological materials or Weyl semimetals. The latter arise from a complex interplay between crystal symmetry, spin-orbit interaction, and inverse ordering of electronic bands. Here, we report on unusual Landau-level transitions in the monopnictide TaP that decrease in energy with increasing magnetic field. We show that these transitions arise naturally at intermediate energies in time-reversal-invariant Weyl semimetals where the Weyl nodes are formed by a partially gapped nodal-loop in the band structure. We propose a simple theoretical model for electronic bands in these Weyl materials that captures the collected magneto-optical data to great extent.
Involved external institutions
Universität Stuttgart
Germany (DE)
École Polytechnique - Université Paris-Saclay
France (FR)
Laboratoire National des Champs Magnétiques Intenses (LNCMI) / French National High Magnetic Field Laboratory- CNRS
France (FR)
University of Fribourg / Universitè de Fribourg
Switzerland (CH)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
Germany (DE)
École Polytechnique - Université Paris-Saclay
France (FR)
Laboratoire National des Champs Magnétiques Intenses (LNCMI) / French National High Magnetic Field Laboratory- CNRS
France (FR)
University of Fribourg / Universitè de Fribourg
Switzerland (CH)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
How to cite
APA:
Polatkan, S., Goerbig, M.O., Wyzula, J., Kemmler, R., Maulana, L.Z., Piot, B.A.,... Orlita, M. (2020). Magneto-Optics of a Weyl Semimetal beyond the Conical Band Approximation: Case Study of TaP. Physical Review Letters, 124(17). https://doi.org/10.1103/PhysRevLett.124.176402
MLA:
Polatkan, S., et al. "Magneto-Optics of a Weyl Semimetal beyond the Conical Band Approximation: Case Study of TaP." Physical Review Letters 124.17 (2020).
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