Resonant magneto-optical spin transitions in zinc-blende and wurtzite semiconductors

A theoretical study of the resonant magneto-optical spin-flip transitions due to electrons bound to shallow donors is made. We present a general formalism of the integrated absorption coefficient for semiconductors having an arbitrary crystal structure. The model is based on the parity-violating spin-orbit interaction responsible for the active electric-dipole transition. Simple analytic expressions of the integrated absorption coefficient are obtained for the Faraday and Voigt field configurations and for any crystals having zinc-blende and wurtzite structure, respectively. A comparison between theory and far-infrared magneto-optical transmission measurements in InSb and Cd0.9Mn0.1Se yields to the strength of the spin-orbit interaction and effective Bohr radius of the donors involved.