RESONANT MAGNETOOPTICAL SPIN TRANSITIONS IN ZINCBLENDE AND WURTZITE SEMICONDUCTORS

A theoretical study of the resonant magneto-optical spin-flip transiti ons due to electrons bound to shallow donors is made. We present a gen eral formalism of the integrated absorption coefficient for semiconduc tors having an arbitrary crystal structure. The model is based on the parity-violating spin-orbit interaction responsible for the active ele ctric-dipole transition. Simple analytic expressions of the integrated absorption coefficient are obtained for the Faraday and Voigt field c onfigurations and for any crystals having zinc-blende and wurtzite str ucture, respectively. A comparison between theory and far-infrared mag neto-optical transmission measurements in InSb and Cd0.9Mn0.1Se yields to the strength of the spin-orbit interaction and effective Bohr radi us of the donors involved.