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Quantum Hall transitions in mesoscopic devices

โœ Scribed by Takashi Nakajima; Takeji Ueda; Susumu Komiyama

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
194 KB
Volume
40
Category
Article
ISSN
1386-9477

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โœฆ Synopsis

System-size dependence of the quantum Hall plateau-to-insulator transition in GaAs two-dimensional electron systems is studied, where the system size is comparable to the correlation length of potential fluctuation. The transition exhibited a nonstandard system-size dependence at low temperatures, which is interpreted by assuming that the underlying mechanism of localization crosses over from Anderson localization to semiclassical percolation in mesoscopic systems.

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