"Jumps" and undamped oscillations of the polarization in a system of optically-oriented electron and nuclear spins of a semiconductor
Novikov V.S., Fleisher V.G.
Conditions were realized in which a system of optically oriented electrons and nuclear spins of the semiconductor has two stable states. "Jumps" and undamped oscillations of the circular polarization of the luminescence were observed. The oscillation periods were the order of seconds.