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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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| Item type | Article | ||||
| Journal or Publication Title | Physical Review Letters | ||||
| Publisher: | American Physical Society | ||||
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| Volume: | 92 | ||||
| Number of Issue or Book Chapter: | 24 | ||||
| Page Range: | p. 246801 | ||||
| Date | 18 June 2004 | ||||
| Institutions | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider | ||||
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| Dewey Decimal Classification | 500 Science > 530 Physics | ||||
| Status | Published | ||||
| Refereed | Unknown | ||||
| Created at the University of Regensburg | Unknown | ||||
| Item ID | 11807 |
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