EVIDENCE OF NONLOCAL BREAKDOWN OF THE INTEGER QUANTUM HALL-EFFECT

Authors
KOMIYAMA S KAWAGUCHI Y OSADA T SHIRAKI Y
Citation
S. Komiyama et al., EVIDENCE OF NONLOCAL BREAKDOWN OF THE INTEGER QUANTUM HALL-EFFECT, Physical review letters, 77(3), 1996, pp. 558-561
Citations number
22
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
77
Issue
3
Year of publication
1996
Pages
558 - 561
Database
ISI
SICI code
0031-9007(1996)77:3<558:EONBOT>2.0.ZU;2-S
Abstract
Current induced breakdown of the integer quantum Hall effect (QHE) is studied in GaAs/AlGaAs single heterostructure Hall bars at T = 1.6-4.2 K and B = 2-6 T (v = 2, 4, and 6). The QHE breakdown is absent over a macroscopic region in the two-dimensional electron gas channel on the side of the electron-injecting corner of the Hall bars. The observed nonlocal nature suggests that bootstrap-type electron heating is relev ant to the QHE breakdown.