Beats of the Magnetocapacitance Oscillations in Lateral Semiconductor Superlattices

Autor:	Kliros, G. S., Divari, P. C.
Rok vydání:	2007
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science
Zdroj:	Mod. Phys. Lett. B, Vol. 21, No. 17 (2007) 1041-1050
Druh dokumentu:	Working Paper
DOI:	10.1142/S0217984907013523
Popis:	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. Comment: 11 pages, 7 figures, accepted by Mod. Phys. Lett. B (March 2007)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0705.2837 Zobrazit plný text záznamu View this record from Arxiv