Beats of the Magnetocapacitance Oscillations in Lateral Semiconductor Superlattices
Abstract
We present calculations on the magnetocapacitance of the two-dimensional electron gas in a lateral semiconductor superlattice under two-dimensional weak periodic potential modulation in the presence of a perpendicular magnetic field. Adopting a Gaussian broadening of magnetic-field-dependent width in the density of states, we present explicit and simple expressions for the magnetocapacitance, valid for the relevant weak magnetic fields and modulation strengths. As the modulation strength in both directions increase, beats of the magnetocapacitance oscillations are observed, in the low magnetic field range (Weiss-oscillations regime), which are absent in the one-dimensional weak modulation case.
Keywords
Cite
@article{arxiv.0705.2837,
title = {Beats of the Magnetocapacitance Oscillations in Lateral Semiconductor Superlattices},
author = {G. S. Kliros and P. C. Divari},
journal= {arXiv preprint arXiv:0705.2837},
year = {2009}
}
Comments
11 pages, 7 figures, accepted by Mod. Phys. Lett. B (March 2007)