Phys. Rev. B 67, 155310 (2003) [11 pages]Electron kinetics in isolated mesoscopic rings driven out of equilibrium |
V. I. Yudson
Center for Frontier Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
Institute of Spectroscopy, Russian Academy of Sciences, 142090, Troitsk, Moscow region, Russia
V. E Kravtsov
International Centre for Theoretical Physics, P.O. Box 586, 34100 Trieste, Italy
Landau Institute for Theoretical Physics, Russian Academy of Sciences, 2 Kosygina str., 117940, Moscow, Russia
Received 10 June 2002; published 15 April 2003
Kinetic theory of nonlinear current response to an external field is developed for mesoscopic normal metal rings threaded by a magnetic flux. General expressions for direct current (dc) are derived for a nonequilibrium regime. These expressions describe simultaneously a contribution to dc made by a nonequilibrium (external) field, as well as the contribution caused by interaction with intrinsic fields. Contributions of electron-electron and electron-phonon interactions to the direct current in a nonequilibrium systems are estimated. The kinetic equation for electrons in a pumped disordered metal ring is solved with taking into account the Coulomb and electron-phonon interactions. This gives an estimate of an overheating of the pumped electron system.
©2003 The American Physical Society
URL: http://link.aps.org/abstract/PRB/v67/e155310
DOI: 10.1103/PhysRevB.67.155310
PACS: 73.23.Ra, 72.15.Rn, 72.40.+w, 72.70.+m
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