Magnetotransport through disordered and anisotropic antidot lattices in GaAs/AlxGa1-xAs heterostructures

K. Tsukagoshi, S. Wakayama, K. Oto, S. Takaoka, K. Murase, K. Gamo

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

We investigate the relation between commensurability oscillations and current flow direction in lateral two-dimensional anisotropic antidot lattices. The anisotropy is introduced as one-directional fluctuation or expansion of the lattice spacing. The fluctuation of the antidot location suppresses the peaks of commensurability oscillations. The suppression is dominated by the fluctuations perpendicular to the current flow direction. In one-directional expanded lattices, the peaks appear at the magnetic fields which correspond to the cyclotron motions with the diameter of the periods perpendicular to the current. These results suggest that the commensurability oscillations are determined only by the period along the direction perpendicular to the current.

Original languageEnglish
Pages (from-to)8344-8347
Number of pages4
JournalPhysical Review B
Volume52
Issue number11
DOIs
Publication statusPublished - 1995 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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