Non-ohmic out-of-plane conductance in a multilayered quantum Hall system

Authors
Kawamura, M Endo, A Katsumoto, S Iye, Y
Citation
M. Kawamura et al., Non-ohmic out-of-plane conductance in a multilayered quantum Hall system, PHYSICA B, 280(1-4), 2000, pp. 380-381
Citations number
4
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
280
Issue
1-4
Year of publication
2000
Pages
380 - 381
Database
ISI
SICI code
0921-4526(200005)280:1-4<380:NOCIAM>2.0.ZU;2-5
Abstract
Out-of-plane transport in a GaAs/AlGaAs superlattice in the quantum Hall re gime exhibits a strong non-ohmicity. At low temperatures and low current bi as, the out-of-plane conductance G(zz) scales with the sample perimeter. Th ese are signatures of the chiral surface state. At higher temperatures or h igher current bias, G(zz) becomes scaled with the sample area, suggesting a crossover to bulk transport. (C) 2000 Elsevier Science B.V. All rights res erved.