Spin excitations in two-dimensional electron gas, their relaxation, photoexcitation and detection methods, and the role of Coulomb correlations
L.V. Kulik,
A.V. Gorbunov,
S.M. Dickmann,
V.B. Timofeev Osipyan Institute of Solid State Physics, Russian Academy of Sciences, Akademika Osip'yana str. 2, Chernogolovka, Moscow Region, 142432, Russian Federation
We discuss spin excitations in a degenerate 2D electron gas in a perpendicular quantizing magnetic field: spin-wave and 'Goldstone' excitons in quantum Hall ferromagnetic (filling factor ν =1) and spin-cyclotron excitons in quantum Hall insulator (ν =2). The latter excited states exhibit record-setting long lifetimes, up to 1 ms, owing to which a transition to a basically new collective state, magnetofermionic condensate, is observable at temperatures T
Keywords: magnetoexcitons, quantum Hall isolator, quantum Hall ferromagnetic, collective excitations, magnetofermionic condensate PACS:71.35.Lk, 73.21.Fg, 78.67.De (all) DOI:10.3367/UFNe.2018.10.038463 URL: https://ufn.ru/en/articles/2019/9/b/ 000504893200002 2-s2.0-85080883626 2019PhyU...62..865K Citation: Kulik L V, Gorbunov A V, Dickmann S M, Timofeev V B "Spin excitations in two-dimensional electron gas, their relaxation, photoexcitation and detection methods, and the role of Coulomb correlations" Phys. Usp.62 865–891 (2019)
PT Journal Article
TI Spin excitations in two-dimensional electron gas, their relaxation, photoexcitation and detection methods, and the role of Coulomb correlations
AU Kulik L V
FAU Kulik LV
AU Gorbunov A V
FAU Gorbunov AV
AU Dickmann S M
FAU Dickmann SM
AU Timofeev V B
FAU Timofeev VB
DP 10 Sep, 2019
TA Phys. Usp.
VI 62
IP 9
PG 865-891
RX 10.3367/UFNe.2018.10.038463
URL https://ufn.ru/en/articles/2019/9/b/
SO Phys. Usp. 2019 Sep 10;62(9):865-891
Received: 15th, June 2018, revised: 11th, October 2018, accepted: 31st, October 2018