Slow Dynamics in the Breakdown of the Quantum Hall Effect

Dynamics during the breakdown of the quantum Hall effect is studied theoretically in the Corbino geometry at a filling factor of 2. Spatio-temporal variations of the density of electrons in the first excited Landau level are calculated as well as those of the electron temperature. It is shown that t...

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Bibliographic Details
Published in:Journal of the Physical Society of Japan 2009-02, Vol.78 (2), p.23708
Main Author: AKERA, Hiroshi
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Electronic transport in interface structures
Exact sciences and technology
Physics
Quantum hall effect (including fractional)
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Summary:Dynamics during the breakdown of the quantum Hall effect is studied theoretically in the Corbino geometry at a filling factor of 2. Spatio-temporal variations of the density of electrons in the first excited Landau level are calculated as well as those of the electron temperature. It is shown that the time constant of the population in this Landau level becomes quite long when the electron temperature is low compared to the Landau-level width.
ISSN:0031-9015
1347-4073
DOI:10.1143/jpsj.78.023708