UNIVERSAL CONDUCTANCE FLUCTUATIONS IN A MULTI-SUBBAND QUANTUM-WELL

Authors
CARMONA HA GEIM AK LANGERAK CJGM FOSTER TJ BROWN CV MAIN PC BEAUMONT SP
Citation
Ha. Carmona et al., UNIVERSAL CONDUCTANCE FLUCTUATIONS IN A MULTI-SUBBAND QUANTUM-WELL, Physica. B, Condensed matter, 211(1-4), 1995, pp. 437-439
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
211
Issue
1-4
Year of publication
1995
Pages
437 - 439
Database
ISI
SICI code
0921-4526(1995)211:1-4<437:UCFIAM>2.0.ZU;2-P
Abstract
We have investigated mesoscopic conductance fluctuations in a GaAs qua ntum well with five electrically quantised two-dimensional (2D) subban ds occupied. The conductance fluctuations occur even in a magnetic hel d parallel to the plane. We attribute the fluctuations to rapid electr on-impurity scattering between different 2D subbands which leads to qu asi-3D motion of electrons within the quantum well. We also report for the first time, the angular correlation of the fluctuations as the ma gnetic field is rotated.