Optical orientation of electrons and holes in semiconductor superlattices
Ivchenko E. L, Kop'ev P. S. , Kochereshko V. P., Ural'tsev I. N., D. R. Yakovlev
A study has been made of the effect of longitudinal and transverse magnetic fields on the optical orientation of the spins of free carriers in a GaAs/AlGaAs superlattice. The increase in the degree of spin polarization of photoelectrons in a classical longitudinal magnetic field is explained on the basis of a suppression of spin relaxation caused by a splitting of an electron miniband which is linear in k.