TY - JOUR

T1 - Band structure of a two-dimensional Dirac semimetal from cyclotron resonance

AU - Shuvaev, A. M.

AU - Dziom, V.

AU - Mikhailov, N. N.

AU - Kvon, Z. D.

AU - Shao, Y.

AU - Basov, D. N.

AU - Pimenov, A.

PY - 2017/10/12

Y1 - 2017/10/12

N2 - Knowing the band structure of materials is one of the prerequisites to understanding their properties. Therefore, angle-resolved photoemission spectroscopy (ARPES) has become a highly demanded experimental tool to investigate the band structure. However, especially in thin film materials with a layered structure and several capping layers, access to the electronic structure by ARPES is limited. Therefore, several alternative methods to obtain the required information have been suggested. Here we directly invert the results by cyclotron resonance experiments to obtain the band structure of a two-dimensional (2D) material. This procedure is applied to the mercury telluride quantum well with a critical thickness which is characterized by a 2D electron gas with linear dispersion relations. The Dirac-like band structure in this material could be mapped both on the electron and on the hole side of the band diagram. In this material, purely linear dispersion of the holelike carriers is in contrast to detectable quadratic corrections for the electrons.

AB - Knowing the band structure of materials is one of the prerequisites to understanding their properties. Therefore, angle-resolved photoemission spectroscopy (ARPES) has become a highly demanded experimental tool to investigate the band structure. However, especially in thin film materials with a layered structure and several capping layers, access to the electronic structure by ARPES is limited. Therefore, several alternative methods to obtain the required information have been suggested. Here we directly invert the results by cyclotron resonance experiments to obtain the band structure of a two-dimensional (2D) material. This procedure is applied to the mercury telluride quantum well with a critical thickness which is characterized by a 2D electron gas with linear dispersion relations. The Dirac-like band structure in this material could be mapped both on the electron and on the hole side of the band diagram. In this material, purely linear dispersion of the holelike carriers is in contrast to detectable quadratic corrections for the electrons.

KW - HGTE QUANTUM-WELLS

KW - FERMIONS

KW - GRAPHENE

KW - SYSTEM

KW - PHASE

KW - GAS

UR - http://www.scopus.com/inward/record.url?scp=85037674885&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.96.155434

DO - 10.1103/PhysRevB.96.155434

M3 - Article

AN - SCOPUS:85037674885

VL - 96

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 15

M1 - 155434

ER -