Phys. Rev. Lett. 91, 046802 (2003) [4 pages]Persistent Currents in Interacting Aharonov-Bohm Interferometers and Their Enhancement by Acoustic RadiationReceived 7 February 2003; published 22 July 2003 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. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.046802
DOI:
10.1103/PhysRevLett.91.046802
PACS:
73.23.–b, 71.38.–k, 72.15.Gd
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