Citation
Bq. Sun et al., Current self-oscillation induced by a transverse magnetic field in a dopedGaAs/AlAs superlattice, PHYS REV B, 60(12), 1999, pp. 8866-8870
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829
→ ACNP
Volume
60
Issue
12
Year of publication
1999
Pages
8866 - 8870
Database
ISI
SICI code
0163-1829(19990915)60:12<8866:CSIBAT>2.0.ZU;2-V
Abstract
We investigate the influence of a transverse magnetic field on the current-
voltage characteristics of a doped GaAs/AlAs superlattice at 1.6 K. The cur
rent transport regimes-stable electric field domain formation and current s
elfoscillation-are observed with increasing transverse magnetic field up to
13 T. Magnetic-field-induced redistribution of electron momentum and energ
y is identified as the mechanism triggering the switching over of one proce
ss to another lending to a change in the dependence of the effective electr
on drift velocity on electric field. Simulation yields excellent agreement
with observed results.