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Compressibility in the integer Quantum Hall Effect within Hartree-Fock approximation
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UNSPECIFIED (2006) Compressibility in the integer Quantum Hall Effect within Hartree-Fock approximation. In: 11th International Conference on Transport in Interacting and Disordered Systems, Egmond aan Zee, NETHERLANDS, AUG 21-26, 2005. Published in: PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 2, 3 (2 Sp. Iss. 2006). pp. 313-316. ISBN *************. doi:10.1002/pssc.200562744 ISSN 1610-1634.
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Official URL: http://dx.doi.org/10.1002/pssc.200562744
Abstract
Electron-electron interactions seem to play a surprisingly small role in the description of the integer quantum Hall effect, considering that for just slightly different filling factors the interactions are of utmost importance causing the interaction-mediated fractional quantum Hall effect. However, recent imaging experiments by Cobden et al. (Phys. Rev. Lett. 82, 4695 (1999)) [1] and Ilani et al. (Nature 427, 328 (2004)) [2] constitute strong evidence for the importance of electron-electron interactions even in the integer effect. The experiments report on measurements of the conductance and electronic compressibility of mesoscopic MOSFET devices that show disagreement with predictions from the single particle model. By diagonalising a random distribution of Gaussian scatterers and treating the interactions in Hartree-Fock approximation we investigate the role of electron-electron interactions for the integer quantum Hall effect and find good agreement with the experimental results. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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Subjects: | Q Science > QC Physics | ||||
Series Name: | PHYSICA STATUS SOLIDI C-CURRENT TOPICS IN SOLID STATE PHYSICS | ||||
Journal or Publication Title: | PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 2 | ||||
Publisher: | WILEY-V C H VERLAG GMBH | ||||
ISBN: | ************* | ||||
ISSN: | 1610-1634 | ||||
Editor: | Brom, HB | ||||
Official Date: | 2006 | ||||
Dates: |
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Volume: | 3 | ||||
Number: | 2 Sp. Iss. 2006 | ||||
Number of Pages: | 4 | ||||
Page Range: | pp. 313-316 | ||||
DOI: | 10.1002/pssc.200562744 | ||||
Publication Status: | Published | ||||
Title of Event: | 11th International Conference on Transport in Interacting and Disordered Systems | ||||
Location of Event: | Egmond aan Zee, NETHERLANDS | ||||
Date(s) of Event: | AUG 21-26, 2005 |
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