DONORS IN GAAS AND INP AT MEGAGAUSS FIELDS

Donor states in GaAs and InP at megagauss magnetic fields are studied experimentally and theoretically. The observations are described by a theoretical model, which uses variational atomic-magnetic wave functio ns and accounts for the band nonparabolicity. The theory describes wel l the absolute values and field dependences of energy shifts between t he cyclotron (CR) transitions and the corresponding magnetodonor (ICR) transitions in both materials. Spin doublets of CR and ICR transition s are considered.