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Spin excitations in two-dimensional electron gas, their relaxation, photoexcitation and detection methods, and the role of Coulomb correlations

, , ,
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

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Fulltext is also available at DOI: 10.3367/UFNe.2018.10.038463
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)
BibTexBibNote ® (generic)BibNote ® (RIS) MedlineRefWorks
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, 31st, October 2018

Оригинал: Кулик Л В, Горбунов А В, Дикман С М, Тимофеев В Б «Спиновые возбуждения в двумерном электронном газе, их релаксация, методы фотовозбуждения и детектирования, роль кулоновских корреляций» УФН 189 925–954 (2019); DOI: 10.3367/UFNr.2018.10.038463

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