Abstract
A spin-depolarized electron system with filling factor ν = 1 in a GaAs quantum well is investigated according to time-resolved Kerr rotation. A transition from a new spin-correlated state to one with the low spin stiffness characteristic of a single-particle electron system is observed at temperatures above 5 K. A nonlinear contribution to the Larmor oscillations decay is distinguished at low temperatures, where spin–spin correlations determine the ground state of a two-dimensional electron system. The parameters of the fluctuating magnetic field acting on individual electron spins are determined.
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ACKNOWLEDGMENTS
The authors thank S.M. Dickmann for his helpful discussions and comments.
Funding
This work was performed as part of a State Task for the Russian Academy of Sciences’ Institute of Solid State Physics.
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Translated by V. Alekseev
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Larionov, A.V., Stepanets-Khussein, E. & Kulik, L.V. Study of a Partly Spin-Polarized Two-Dimensional Electron System, According to Time-Resolved Magneto-Optical Kerr Rotation. Bull. Russ. Acad. Sci. Phys. 85, 146–150 (2021). https://doi.org/10.3103/S1062873821020180
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DOI: https://doi.org/10.3103/S1062873821020180