Temperature-dependent screening of the edge state around antidots in the quantum Hall regime

The Aharonov-Bohm effect in a small array of antidots with a large aspect ratio is investigated in the quantum Hall regime. The evolution with temperature of the Aharonov-Bohm oscillations in the magnetic field versus gate voltage (B-V_{g}) plane reveals the temperature dependence of the screening....

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Bibliographic Details
Published in:Physical review letters 2009-02, Vol.102 (8), p.086802-086802, Article 086802
Main Authors: Kato, Masanori, Endo, Akira, Katsumoto, Shingo, Iye, Yasuhiro
Format: Article
Language:English
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Summary:The Aharonov-Bohm effect in a small array of antidots with a large aspect ratio is investigated in the quantum Hall regime. The evolution with temperature of the Aharonov-Bohm oscillations in the magnetic field versus gate voltage (B-V_{g}) plane reveals the temperature dependence of the screening. The self-consistently screened potential of the compressible band surrounding an antidot is observed to gain a progressively steeper slope with increasing temperature.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.102.086802