ANOMALOUS REAL-SPACE CHARGE-TRANSFER THROUGH THICK BARRIERS IN GAAS ALXGA1-X AS A SYMMETRICAL DOUBLE-QUANTUM WELLS - ALXGA1-XAS AS A PERCOLATING BARRIER/

Authors
KIM DS KO HS KIM YM RHEE SJ HONG SC YEE YH KIM WS WOO JC CHOI HJ IHM J WOO DH KANG KN
Citation
Ds. Kim et al., ANOMALOUS REAL-SPACE CHARGE-TRANSFER THROUGH THICK BARRIERS IN GAAS ALXGA1-X AS A SYMMETRICAL DOUBLE-QUANTUM WELLS - ALXGA1-XAS AS A PERCOLATING BARRIER/, Solid state communications, 100(4), 1996, pp. 231-235
Citations number
21
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
100
Issue
4
Year of publication
1996
Pages
231 - 235
Database
ISI
SICI code
0038-1098(1996)100:4<231:ARCTTB>2.0.ZU;2-Z
Abstract
Anomalously large real space charge transfer through thick barriers in GaAs asymmetric double quantum wells is studied. This inter-well exci tonic transfer is very large when the barrier is the Al0.3Ga0.7As allo y, but disappears when the barrier is an equivalent GaAs/AlAs digital alloy. These results combined with observed x and barrier thickness de pendence suggest that the inhomogeneities in the barrier may be respon sible for this transfer. This picture is supported by the quantum mech anical calculation in three dimensions. Copyright (C) 1996 Published b y Elsevier Science Ltd