Persistent currents in interacting Aharonov-Bohm interferometers and their enhancement by acoustic radiation
arXiv:cond-mat/0302146 · doi:10.1103/PhysRevLett.91.046802
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.
4 pages, 1 figure
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- Thermal and Electrical Currents in Nanoscale Electronic Interferometers
- Effects of external radiation on biased Aharonov-Bohm rings
- Interference of heavy holes in an Aharonov-Bohm ring
- Controlling local currents in molecular junctions
- Conductance Phases in Aharonov-Bohm Ring Quantum Dots
- Effect of spin-orbit interaction on circular current: Pure spin current phenomena within a ring conductor