%0 Journal Article
%T Temperature-dependent magnetospectroscopy of HgTe quantum wells
%+ Laboratoire Charles Coulomb (L2C)
%A Ikonnikov, A. V.
%A Krishtopenko, Sergey S.
%A Drachenko, Oleksiy
%A Goiran, Michel
%A Zholudev, Maksim
%A Platonov, V. V.
%A Kudasov, Yu. B.
%A Korshunov, A. S.
%A Maslov, D. A.
%A Makarov, I. V.
%A Surdin, O. M.
%A Philippov, A. V.
%A Marcinkiewicz, M.
%A Ruffenach, Sandra
%A Teppe, Frederic
%A Knap, Wojciech
%A Mikhailov, N. N.
%A Dvoretsky, S. A.
%A Gavrilenko, V. I.
%< avec comité de lecture
%Z L2C:16-180
%@ 2469-9950
%J Physical Review B
%I American Physical Society
%V 94
%N 15
%P 155421
%8 2016-10-13
%D 2016
%R 10.1103/PhysRevB.94.155421
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles
%X We report on magnetospectroscopy of HgTe quantum wells in magnetic fields up to 45 T in a temperature range from 4.2 up to 185 K. We observe intra- and inter-band transitions from zero-mode Landau levels, which split from the bottom conduction and upper valence sub-bands and merge under the applied magnetic field. To describe experimental results, realistic temperature-dependent calculations of Landau levels have been performed. We show that although our samples are topological insulators at low temperatures only, the signature of such a phase persists in optical transitions at high temperatures and high magnetic fields. Our results demonstrate that temperature-dependent magnetospectroscopy is a powerful tool to discriminate trivial and topological insulator phases in HgTe quantum wells.
%G English
%2 https://hal.science/hal-01397638/document
%2 https://hal.science/hal-01397638/file/PDF8.pdf
%L hal-01397638
%U https://hal.science/hal-01397638
%~ CNRS
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021
%~ TEST3-HALCNRS