Conductance of Aharonov--Bohm Rings: From the Discrete to the Continuous Spectrum Limit
Alex Kamenev, Bertrand Reulet, Helene Bouchiat, Yuval Gefen
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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