CURRENT-INDUCED DECOUPLING OF EDGE STATES IN THE INTEGER QUANTUM HALL-EFFECT

Authors
MACHIDA T HIRAI H KOMIYAMA S OSADA T SHIRAKI Y
Citation
T. Machida et al., CURRENT-INDUCED DECOUPLING OF EDGE STATES IN THE INTEGER QUANTUM HALL-EFFECT, Physical review. B, Condensed matter, 54(20), 1996, pp. 14261-14264
Citations number
34
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
54
Issue
20
Year of publication
1996
Pages
14261 - 14264
Database
ISI
SICI code
0163-1829(1996)54:20<14261:CDOESI>2.0.ZU;2-L
Abstract
A Hall resistance in AlxGa1-xAs/GaAs heterostructure devices shows mar kedly asymmetric nonlinear behavior in the presence of nonequilbrium p opulation between edge channels. The nonlinear characteristics vary su bstantially with increasing temperature from 20 mK up to 1 K, suggesti ng that the energy dispersion of the edge state is stepwise at low tem peratures, but smears with increasing temperature.