Auteur(s): Akrap A., Hakl M., Tchoumakov S., Crassee I., Kuba J., Goerbig M., Homes C. c., Caha O., Novák J., Teppe F., Desrat W., Koohpayeh S., Wu L., Armitage N. p., Nateprov A., Arushanov E., Gibson Q. d., Cava J., van Der Marel D., Piot B., Faugeras C., Martinez Garcia Gines, Potemski M., Orlita M.
(Article) Publié:
Physical Review Letters, vol. 117 p. (2016)
Texte intégral en Openaccess : 
Ref HAL: hal-01986067_v1
DOI: 10.1103/PhysRevLett.117.136401
WoS: 000383851000016
Exporter : BibTex | endNote
53 Citations
Résumé:
We report on optical reflectivity experiments performed on Cd3As2 over a broad range of photonenergies and magnetic fields. The observed response clearly indicates the presence of 3D massless charge carriers. The specific cyclotron resonance absorption in the quantum limit implies that weare probing massless Kane electrons rather than symmetry-protected 3D Dirac particles. The latter may appear at a smaller energy scale and are not directly observed in our infrared experiments.