Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Spin mixing between subbands and extraordinary Landau-level shift in wide HgTe quantum wells. / Dobretsova, A. A.; Chepelianskii, A. D.; Mikhailov, N. N. и др.
в: Physical Review B, Том 98, № 15, 155310, 11.10.2018.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Spin mixing between subbands and extraordinary Landau-level shift in wide HgTe quantum wells
AU - Dobretsova, A. A.
AU - Chepelianskii, A. D.
AU - Mikhailov, N. N.
AU - Kvon, Z. D.
N1 - Publisher Copyright: © 2018 American Physical Society.
PY - 2018/10/11
Y1 - 2018/10/11
N2 - We present both the experimental and theoretical investigations of a nontrivial electron Landau-level shift in magnetic field in wide (∼20 nm) HgTe quantum wells: Landau levels split under magnetic fields but become degenerate again when magnetic field increases. We reproduced this behavior qualitatively within an isotropic six-band Kane model; then using semiclassical calculations, we showed this behavior is due to the mixing of the conduction band with a total spin of 3/2 with the next well subband with a spin of 1/2, which reduces the average vertical spin from 3/2 to around 1. This change in the average spin changes the Berry phase, explaining the evolution of Landau levels under magnetic field.
AB - We present both the experimental and theoretical investigations of a nontrivial electron Landau-level shift in magnetic field in wide (∼20 nm) HgTe quantum wells: Landau levels split under magnetic fields but become degenerate again when magnetic field increases. We reproduced this behavior qualitatively within an isotropic six-band Kane model; then using semiclassical calculations, we showed this behavior is due to the mixing of the conduction band with a total spin of 3/2 with the next well subband with a spin of 1/2, which reduces the average vertical spin from 3/2 to around 1. This change in the average spin changes the Berry phase, explaining the evolution of Landau levels under magnetic field.
KW - 2-DIMENSIONAL SEMIMETAL
KW - MAGNETIC-SUSCEPTIBILITY
KW - CYCLOTRON-RESONANCE
KW - PHASE
KW - INSULATOR
KW - SCATTERING
KW - SPECTRUM
KW - STATE
UR - http://www.scopus.com/inward/record.url?scp=85054923915&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.98.155310
DO - 10.1103/PhysRevB.98.155310
M3 - Article
AN - SCOPUS:85054923915
VL - 98
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 15
M1 - 155310
ER -
ID: 17117335