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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2004     Display Documents



  history
ID: 192986.0, MPI für Festkörperforschung / FKF Publikationen 2004
Coulomb drag as a probe of the nature of compressible states in a magnetic field
Authors:Muraki, K.; Lok, J. G. S.; Kraus, S.; Dietsche, W.; von Klitzing, K.; Schuh, D.; Bichler, M.; Wegscheider, W.
Language:English
Date of Publication (YYYY-MM-DD):2004
Title of Journal:Physical Review Letters
Volume:92
Issue / Number:24
Sequence Number of Article:246801
Review Status:not specified
Audience:Not Specified
Abstract / Description:Magnetodrag reveals the nature of compressible states and the
underlying interplay of disorder and interactions. At nu=3/2 clear
T-4/3 dependence is observed, which signifies the metallic nature of
the N=0 Landau level. In contrast, drag in higher Landau levels reveals
an additional contribution, which anomalously grows with decreasing T
before turning to zero following a thermal activation law. The
anomalous drag is discussed in terms of electron-hole asymmetry arising
from disorder and localization, and the crossover to normal drag at
high fields as due to screening of disorder.
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
; NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan.
; Tech Univ Munich, Walter Schottky Inst, D-85748 Garching, Germany.
Identifiers:ISI:000222112900047 [ID No:1]
ISSN:0031-9007 [ID No:2]
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