Abstract
Spin relaxation in a two-dimensional electron gas (2D EG) is treated as the establishment of equilibrium in a gas of spin excitons as a result of processes that change the number of spin excitons. Coalescence is the dominant channel above a temperature of the order of 1 K. The coalescence of excitons can occurr as a result of spin-orbit and Coulomb interactions in the 2D EG. The rate of coalescence falls exponentially at low temperatures. The relaxation time is calculated, and the critical temperature below which the main annihilation process becomes that due to the exciton-phonon interaction is determined.
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Pis’ma Zh. Éksp. Teor. Fiz. 70, No. 8, 531–536 (25 October 1999)
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Dikman, S.M., Iordanskii, S.V. Contribution to the theory of spin relaxation at finite temperatures in the odd-filling quantum Hall effect regime. Jetp Lett. 70, 543–549 (1999). https://doi.org/10.1134/1.568211
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DOI: https://doi.org/10.1134/1.568211