<title>Spin memory in the n-doped GaAs/AlGaAs quantum wells</title>

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The polarized luminescence spectra and kinetics of the GaAs quantum wells with excess free electrons are studied experimentally. Quantum beats between the exciton and electron spin sublevels, split by a magnetic field, are detected. The dynamics of the degree of polarization is found to contain a long component associated with slow relaxation of electron spins.

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