Evidence for three-dimensional Dirac conical bands in TlBiSSe by optical and magneto-optical spectroscopy - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review B Année : 2023

Evidence for three-dimensional Dirac conical bands in TlBiSSe by optical and magneto-optical spectroscopy

D. Tolj
M. Novak
S. Paschen
Z. Rukelj
Ana Akrap

Résumé

TlBiSSe is a rare realization of a three-dimensional semimetal with a conically dispersing band that has an optical response which is well isolated from other contributions in a broad range of photon energies. We report optical and magneto-optical spectroscopy on this material. When the compound is chemically tuned into a state of the lowest carrier concentration, we find a nearly linear frequency dependence of the optical conductivity below 0.5 eV. Landau level spectroscopy allows us to describe the system with a massive Dirac model, giving a gap 2 = 32 meV and an in-plane velocity parameter v xy = 4.0 × 10 5 m/s.
Fichier principal
Vignette du fichier
LeMardelePRB23.pdf (3.76 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04240445 , version 1 (13-10-2023)

Identifiants

Citer

F. Le Mardelé, J. Wyzula, I. Mohelsky, S. Nasrallah, M. Loh, et al.. Evidence for three-dimensional Dirac conical bands in TlBiSSe by optical and magneto-optical spectroscopy. Physical Review B, 2023, 107 (24), pp.L241101. ⟨10.1103/PhysRevB.107.L241101⟩. ⟨hal-04240445⟩
13 Consultations
26 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More