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Muraki, K. ; Lok, J. G. S. ; Kraus, Stefan ; Dietsche, W. ; Klitzing, Klaus von ; Schuh, Dieter ; Bichler, Max ; Wegscheider, Werner

Coulomb Drag as a Probe of the Nature of Compressible States in a Magnetic Field

Muraki, K., Lok, J. G. S., Kraus, Stefan, Dietsche, W., Klitzing, Klaus von, Schuh, Dieter, Bichler, Max and Wegscheider, Werner (2004) Coulomb Drag as a Probe of the Nature of Compressible States in a Magnetic Field. Physical Review Letters 92 (24), p. 246801.

Date of publication of this fulltext: 11 Jan 2010 13:10
Article
DOI to cite this document: 10.5283/epub.11807


Abstract

Magnetodrag reveals the nature of compressible states and the underlying interplay of disorder and interactions. At ν=3/2 clear T4/3 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. ...

Magnetodrag reveals the nature of compressible states and the underlying interplay of disorder and interactions. At ν=3/2 clear T4/3 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.



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Details

Item typeArticle
Journal or Publication TitlePhysical Review Letters
Publisher:American Physical Society
Volume:92
Number of Issue or Book Chapter:24
Page Range:p. 246801
Date18 June 2004
InstitutionsPhysics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Identification Number
ValueType
10.1103/PhysRevLett.92.246801DOI
Related URLs
URLURL Type
http://link.aps.org/doi/10.1103/PhysRevLett.92.246801Publisher
Classification
NotationType
73.43.–f, 73.21.–b, 73.50.–hPACS
Dewey Decimal Classification500 Science > 530 Physics
StatusPublished
RefereedUnknown
Created at the University of RegensburgUnknown
Item ID11807

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