TRANSVERSE MAGNETIC FOCUSING AND THE DISPERSION OF GAAS 2D HOLES AT (311)A HETEROJUNCTIONS

Authors
HEREMANS JJ SANTOS MB SHAYEGAN M
Citation
Jj. Heremans et al., TRANSVERSE MAGNETIC FOCUSING AND THE DISPERSION OF GAAS 2D HOLES AT (311)A HETEROJUNCTIONS, Surface science, 305(1-3), 1994, pp. 348-352
Citations number
19
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
305
Issue
1-3
Year of publication
1994
Pages
348 - 352
Database
ISI
SICI code
0039-6028(1994)305:1-3<348:TMFATD>2.0.ZU;2-U
Abstract
We report transverse magnetic focusing experiments on two-dimensional hole systems confined in square and triangular quantum wells grown on (311)A GaAs substrates. The focusing barriers are oriented along diffe rent crystallographic directions and allow us to derive the constant e nergy contours in k-space. The results indicate a nearly elliptical sh ape for these contours which we interpret in light of a lateral surfac e superlattice induced by corrugations at the heterojunction.