Geometry, statistics, and asymptotics of quantum pumps

J. E. Avron, A. Elgart, G. M. Graf, L. Sadun, L. Sadun

Research output: Contribution to journalArticlepeer-review

158 Scopus citations

Abstract

We give a pedestrian derivation of a formula of Büttiker, Pretre, and Thomas [Z. Phys. B 94, 133 (1994)] (BPT) relating the adiabatically pumped current to the S-matrix and its (time) derivatives. We relate the charge in BPT to Berry's phase and the corresponding Brouwer pumping formula to curvature. As applications we derive explicit formulas for the joint probability density of pumping and conductance when the S-matrix is uniformly distributed; and derive a formula that describes hard pumping when the S-matrix is periodic in the driving parameters.

Original languageEnglish
Article numberR10618
Pages (from-to)R10618-R10621
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume62
Issue number16
DOIs
StatePublished - 15 Oct 2000
Externally publishedYes

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