Issue |
Europhys. Lett.
Volume 63, Number 3, August 2003
|
|
---|---|---|
Page(s) | 426 - 432 | |
Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
DOI | https://doi.org/10.1209/epl/i2003-00537-2 | |
Published online | 01 November 2003 |
Interaction-induced quantum dephasing in mesoscopic rings
1
Institut für Theoretische Festkörperphysik, Universität Karlsruhe D-76128 Karlsruhe, Germany
2
I. E. Tamm Department of Theoretical Physics, P. N. Lebedev Physics Institute 119991 Moscow, Russia
3
Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco E-28049 Madrid, Spain
4
Forschungszentrum Karlsruhe, Institut für Nanotechnologie D-76021 Karlsruhe, Germany
Received:
22
January
2003
Accepted:
2
June
2003
Combining nonperturbative techniques with Monte Carlo simulations, we demonstrate that quantum coherence effects for a particle on a ring are suppressed beyond a finite length even at zero temperature if the particle is coupled to a diffusive electron gas by means of long-range Coulomb interaction. This length is consistent with derived from a weak-localization–type analysis.
PACS: 73.23.Ra – Persistent currents / 72.10.-d – Theory of electronic transport; scattering mechanisms / 71.10.-w – Theories and models of many-electron systems
© EDP Sciences, 2003
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