DELOCALIZATION AND MOBILITY OF ELECTRONS AT THE RESONANCE OF GROUND-STATES IN A COUPLED DOUBLE-QUANTUM-WELL STRUCTURE

Authors
YAMAGUCHI M SUGIMOTO R SAWAKI N
Citation
M. Yamaguchi et al., DELOCALIZATION AND MOBILITY OF ELECTRONS AT THE RESONANCE OF GROUND-STATES IN A COUPLED DOUBLE-QUANTUM-WELL STRUCTURE, Solid-state electronics, 42(7-8), 1998, pp. 1553-1556
Citations number
7
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied","Physics, Condensed Matter
Journal title
Solid-state electronics → ACNP
ISSN journal
00381101
Volume
42
Issue
7-8
Year of publication
1998
Pages
1553 - 1556
Database
ISI
SICI code
0038-1101(1998)42:7-8<1553:DAMOEA>2.0.ZU;2-R
Abstract
The transport of photo-excited electrons in a p-type GaAs/AlGaAs doubl e quantum well is analyzed with the femtosecond time-of-flight method. It is shown that the mobility at the resonance is higher than that at the off-resonance, which is attributed to the decrease of interface-r oughness scattering due to the delocalization of the electronic wavefu nction. Numerical results based on a model interface-roughness potenti al show a qualitative agreement with the experimental observation. (C) 1998 Elsevier Science Ltd. All rights reserved.