Persistent Currents in Interacting Aharonov-Bohm Interferometers and Their Enhancement by Acoustic Radiation

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Abstract

We consider an Aharonov-Bohm interferometer, connected to two electronic reservoirs, with a quantum dot embedded on one of its arms. We find a general expression for the persistent current at steady state, valid for the case where the electronic system is free of interactions except on the dot. The result is used to derive the modification in the persistent current brought about by coupling the quantum dot to a phonon source. The magnitude of the persistent current is found to be enhanced in an appropriate range of the intensity of the acoustic source.

Original languageEnglish
JournalPhysical Review Letters
Volume91
Issue number4
DOIs
StatePublished - 22 Jul 2003
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (all)

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