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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2004, Volume 79, Issue 4, Pages 206–211
(Mi jetpl2233)
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This article is cited in 3 scientific papers (total in 3 papers)
CONDENSED MATTER
Manifestation of the bulk phase transition in the edge energy spectrum in a two dimensional bilayer electron system
E. V. Deviatova, A. Würtzb, A. Lorkeb, M. Yu. Melnikova, V. T. Dolgopolova, A. Wixforthc, K. L. Campmand, A. C. Gossardd a Institute of Solid State Physics RAS, Chernogolovka, Moscow District 142432, Russia
b Laboratorium für Festkörperphysik, Universität
Duisburg-Essen, D-47048 Duisburg, Germany
c Institut für Physik, Universitat Augsburg,
Universitatsstrasse, 1 D-86135 Augsburg, Germany
d Materials Department and Center for Quantized Electronic
Structures, University of California, Santa Barbara, California 93106, USA
Abstract:
We use a quasi-Corbino sample geometry with independent contacts to different edge states in the quantum Hall effect regime to investigate the edge energy spectrum of a bilayer electron system at total filling factor $\nu=2$. By analyzing non-linear $I-V$ curves in normal and tilted magnetic fields we conclude that the edge energy spectrum is in a close connection with the bulk one. At the bulk phase transition spin-singlet – canted antiferromagnetic phase $I-V$ curve becomes linear, indicating the disappearance or strong narrowing of the $\nu=1$ incompressible strip at the edge of the sample.
Received: 22.01.2004
Citation:
E. V. Deviatov, A. Würtz, A. Lorke, M. Yu. Melnikov, V. T. Dolgopolov, A. Wixforth, K. L. Campman, A. C. Gossard, “Manifestation of the bulk phase transition in the edge energy spectrum in a two dimensional bilayer electron system”, Pis'ma v Zh. Èksper. Teoret. Fiz., 79:4 (2004), 206–211; JETP Letters, 79:4 (2004), 171–176
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https://www.mathnet.ru/eng/jetpl2233 https://www.mathnet.ru/eng/jetpl/v79/i4/p206
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