Surface state charge dynamics of a high-mobility three-dimensional topological insulator.
We present a magneto-optical study of the three-dimensional topological insulator, strained HgTe, using a technique which capitalizes on advantages of time-domain spectroscopy to amplify the signal from the surface states. This measurement delivers valuable and precise information regarding the surface-state dispersion within <1 meV of the Fermi level. The technique is highly suitable for the pursuit of the topological magnetoelectric effect and axion electrodynamics.
Département de Physique de la Matière Condensée, Université de Genève, Switzerland.
Jason N
JN
Hancock
J L M
JL
van Mechelen
Alexey B
AB
Kuzmenko
Dirk
D
van der Marel
Christoph
C
Brüne
Elena G
EG
Novik
Georgy V
GV
Astakhov
Hartmut
H
Buhmann
Laurens W
LW
Molenkamp