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Conductance of Aharonov--Bohm Rings: From the Discrete to the Continuous Spectrum Limit

Alex Kamenev, Bertrand Reulet, Helene Bouchiat, Yuval Gefen

cond-matarXiv:cond-mat/9312093

Abstract

The dissipative conductance of an array of mesoscopic rings, subject to an a.c. magnetic flux is investigated. The magneto--conductance may change sign between canonical and grand-canonical statistical ensembles, as function of the inelastic level broadening and as function of the temperature. Differences between canonical and grand-canonical ensembles persist up to temperature of the order of the Thouless energy.

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