Abstract
Cyclotron resonance using microwave and far infrared radiation is used to study nonparabolicity of electron effective masses and spin splitting effects in high mobility CdTe, ZnTe and ZnSe. Mobilities close to 1×106 cm2/Vs are found but only for high magnetic fields when scattering events on the orbits given by the magnetic length are relevant. Nonparabolicity effects are not evident for ZnSe/ZnSSe quantum wells, mass enhancement arises from a penetration of the electron wave function into the barrier. The potential of optically detected cyclotron resonance at microwave frequencies allows to give insight in hot electron effects in ZnTe.
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