Conductivity oscillations in 2D superlattice with non-harmonical dispersion law under non-quantizing electric and magnetic fields (in Russian)

Abstract

We calculate the current density in a semiconductor superlattice with parabolic miniband under crossed non-quantizing electric and magnetic fields. The Corbino disk geometry is considered. The current-voltage curve contains oscillations with period proportional to the magnetic field. The possibility is shown of the negative absolute conductivity. The Ampere-Gauss characteristics also contain overshoots under high enough electric fields. In all cases, the peaks smear with temperature rising.

5 pages, 2 figure, in Russian