Lorentz-Boost-Driven Magneto-Optics in a Dirac Nodal-Line Semimetal.
Landau level spectroscopy
Lorentz boost
dirac and topological matter
infrared magneto-spectroscopy
nodal-line semimetals
Journal
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
ISSN: 2198-3844
Titre abrégé: Adv Sci (Weinh)
Pays: Germany
ID NLM: 101664569
Informations de publication
Date de publication:
Aug 2022
Aug 2022
Historique:
revised:
14
04
2022
received:
09
12
2021
pubmed:
18
6
2022
medline:
18
6
2022
entrez:
17
6
2022
Statut:
ppublish
Résumé
Optical response of crystalline solids is to a large extent driven by excitations that promote electrons among individual bands. This allows one to apply optical and magneto-optical methods to determine experimentally the energy band gap -a fundamental property crucial to our understanding of any solid-with a great precision. Here it is shown that such conventional methods, applied with great success to many materials in the past, do not work in topological Dirac semimetals with a dispersive nodal line. There, the optically deduced band gap depends on how the magnetic field is oriented with respect to the crystal axes. Such highly unusual behavior is explained in terms of band-gap renormalization driven by Lorentz boosts which results from the Lorentz-covariant form of the Dirac Hamiltonian relevant for the nodal line at low energies.
Identifiants
pubmed: 35713280
doi: 10.1002/advs.202105720
pmc: PMC9376811
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e2105720Subventions
Organisme : ANR
ID : Colector ANR-19-CE30-0032
Organisme : ANR
ID : DIRAC3D ANR-17-CE30-0023
Organisme : PHC ORCHID
ID : 47044XE
Organisme : Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
ID : PP00P2-170544
Organisme : Ministry of Science and Technology
ID : MOST-110-2112-M-001-065-MY3
Organisme : National Science Foundation
ID : DMR-1914451
Organisme : Croatian Government + European regional development fund
ID : KK.01.1.1.02.0013
Informations de copyright
© 2022 The Authors. Advanced Science published by Wiley-VCH GmbH.
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