Magneto-Optical Signature of Massless Kane Electrons in Cd3As2

journal article in Web of Science

English

The article reports on optical reflectivity experiments performed on Cd3As2 over a broad range of photon energies 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 we are 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 infrared experiments.

magneto-optics; massless charge carriers; Kane electrons

AKRAP, A.; HAKL, M.; THOUMAKOV, S.; CRASEE, I.; KUBA, J.; GOERBIG, M.; HOMES, C.; CAHA, O.; NOVÁK, J.; TEPPE, F.; DESRAT, W.; KOOHPAYEH, S.; WU, L.; ARMITAGE, N.; NATEPROV, A.; ARUSHANOV, E.; GIBSON, Q.; CAVA, R.; VAN DER MAREL, D.; PIOT, B.; FAUGERAS, C.; MARTINEZ, G.; POTEMSKI, M.; ORLITA, M.

21. 9. 2016

0031-9007

Physical Review Letters

117

13

United States of America

136401-1

136401-6

6