Open AccessОсобенности когерентной спиновой динамики двумерного электронного газа в режиме холловского ферромагнетика
Author(s) -
А.В. Ларионов,
Э. Степанец-Хуссейн,
Л.В. Кулик
Publication year - 2020
Publication title -
fizika i tehnika poluprovodnikov
Language(s) - English
Resource type - Journals
eISSN - 1726-7315
pISSN - 0015-3222
DOI - 10.21883/ftp.2020.09.49843.39
Subject(s) - condensed matter physics , spins , physics , spin (aerodynamics) , electron , ground state , magnetic field , larmor precession , atomic physics , quantum mechanics , thermodynamics
By means of the time-resolved Kerr rotation technique, a spin-depolarized electron system at a filling factor ν = 1 in a GaAs quantum well was studied. At temperatures above 5 K, a transition from a new spin-correlated state to a state with low spin stiffness characteristic of a single-particle electron system was found. A nonlinear contribution to the decay of Larmor oscillations arising at low temperatures, when spin-spin correlations determine the ground state of a two-dimensional electron system, is highlighted. The parameters of the fluctuating magnetic field acting on individual electron spins are estimated.