Magneto-Optical Signature of Massless Kane Electrons in Cd3As2

被引：98

作者：

Akrap, A. ^{[1
]}

Hakl, M. ^{[2
]}

Tchoumakov, S. ^{[3
]}

Crassee, I. ^{[4
]}

Kuba, J. ^{[2
,5
]}

Goerbig, M. O. ^{[3
]}

Homes, C. C. ^{[6
]}

Caha, O. ^{[7
]}

Novak, J. ^{[7
]}

Teppe, F. ^{[8
]}

Desrat, W. ^{[8
]}

Koohpayeh, S. ^{[9
]}

Wu, L. ^{[9
,10
]}

Armitage, N. P. ^{[9
]}

Nateprov, A. ^{[11
]}

Arushanov, E. ^{[11
]}

Gibson, Q. D. ^{[12
]}

Cava, R. J. ^{[12
]}

van der Marel, D. ^{[1
]}

Piot, B. A. ^{[2
]}

Faugeras, C. ^{[2
]}

Martinez, G. ^{[2
]}

Potemski, M. ^{[2
]}

Orlita, M. ^{[2
,13
]}

机构：

[1] Univ Geneva, DQMP, CH-1211 Geneva 4, Switzerland

[2] CNRS UGA UPS INSA, LNCMI, 25 Ave Martyrs, F-38042 Grenoble, France

[3] Univ Paris Saclay, Univ Paris Sud, CNRS UMR 8502, LPS, F-91405 Orsay, France

[4] Univ Geneva, GAP Biophoton, CH-1211 Geneva 4, Switzerland

[5] Brno Univ Technol, CEITEC BUT, Brno 61600, Czech Republic

[6] Brookhaven Natl Lab, CMPMS, Upton, NY 11973 USA

[7] Masaryk Univ, Fac Sci, CEITEC MU, CS-61137 Brno, Czech Republic

[8] Univ Montpellier, CNRS, Lab Charles Coulomb, F-34095 Montpellier, France

[9] Johns Hopkins Univ, Inst Quantum Matter, Baltimore, MD 21218 USA

[10] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[11] Moldavian Acad Sci, Inst Appl Phys, MD-2028 Kishinev, Moldova

[12] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

[13] Charles Univ Prague, Inst Phys, CR-12116 Prague, Czech Republic

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 13期

关键词：

DIRAC SEMIMETAL CD3AS2; BAND-STRUCTURE; CADMIUM ARSENIDE; II3V2; COMPOUNDS; CRYSTAL; SEMICONDUCTORS; MOBILITY; GRAPHENE;

D O I：

10.1103/PhysRevLett.117.136401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report 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 our infrared experiments.

引用

页数：6

共 26 条

[1] The Crystal and Electronic Structures of Cd3As2, the Three-Dimensional Electronic Analogue of Graphene [J].