DYNAMIC CONDUCTIVITY OF A LATERAL-SURFACE SUPERLATTICE IN A MAGNETIC-FIELD

Results are presented of a theoretical and experimental investigation of the dynamic conductivity in the microwave region of a two-dimension al lateral-surface superlattice. A theoretical analysis based on the s olution of the Boltzmann kinetic equation for 2D electrons in a latera lly modulating potential, an external magnetic field and a microwave f ield shows that the components of the dynamic conductivity tenser have an oscillatory character of various types. A preliminary experimental study of the dynamic conductivity in the microwave region is presente d. Measurements of the reflection coefficient of the microwave radiati on (f = 38 GHz) from a GaAs/AlGaAs lateral superlattice have been carr ied out. For the first time Weiss-type oscillations have been observed in a dynamic regime.