Persistent current in metals with a large dephasing rate |
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| Authors: | P Schwab |
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| Institution: | Institut für Physik, Universit?t Augsburg, 86135 Augsburg, Germany, DE
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| Abstract: | In a weakly disordered metal electron interactions are responsible for both decoherence of the quasi-particles as well as
for quantum corrections to thermodynamic properties. We consider electrons which are interacting with two-level-systems. We
show that the two-level-systems enhance the average equilibrium (“persistent”) current in an ensemble of mesoscopic rings.
The result supports the recent suggestion that two puzzles in mesoscopic physics may be related: The low temperature saturation
of the dephasing time and the high persistent current in rings.
Received 26 May 2000 |
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| Keywords: | PACS 05 30 Fk Fermion systems and electron gas - 73 23 Ra Persistent currents |
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