Insulator-quantum Hall transition in antidot lattices | Zendy

Seiji Uryu | Zendy; Tsuneya Ando | Zendy

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Insulator-quantum Hall transition in antidot lattices

Author(s) -

Seiji Uryu,

Tsuneya Ando

Publication year - 2001

Publication title -

physical review. b, condensed matter

Language(s) - English

Resource type - Journals

eISSN - 1095-3795

pISSN - 0163-1829

DOI - 10.1103/physrevb.65.035322

Subject(s) - condensed matter physics , physics , quantum hall effect , magnetic flux quantum , magnetic field , quantum , magnetic flux , fermi energy , insulator (electricity) , quantum mechanics , electron , optoelectronics

Localization in antidot lattices subjected to a magnetic field is numerically studied. Oscillations of the localization length with periods of Φ 0 /2 and Φ 0 , where Φ 0 is a flux quantum h/e, as a function of flux passing through a unit cell are obtained and an insulator-quantum Hall transition point where the Fermi level crosses extended states is identified. It is revealed that extended states float up in energy and disappear at a critical magnetic field. The results are in good agreement with recent experiments.

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