On the Theory of Magnetotransport in a Periodically Modulated Two-Dimensional Electron Gas

Abstract

A semiclassical theory based on the Boltzmann transport equation for a two-dimensional electron gas modulated along one direction with weak electrostatic or magnetic modulations is proposed. It is shown that oscillations of the magnetoresistivity ${\rho }_{||}$ corresponding to the current driven along the modulation lines observed at moderately low magnetic fields, can be explained as classical geometric resonances reflecting the commensurability of the period of spatial modulations and the cyclotron radius of electrons.

5 pages, 1 figure, text and 1 figure added

References in corpus (5)

• Weiss oscillations in the presence of small-angle impurity scattering
• Composite Fermions in Modulated Structures: Transport and Surface Acoustic Waves
• Velocity shift of surface acoustic waves due to interaction with composite fermions in a modulated structure
• Weiss Oscillations in Surface Acoustic Wave Propagation
• Anisotropic scattering and quantum magnetoresistivities of a periodically modulated 2D electron gas