Intrinsic dissipative fluctuation rate in mesoscopic superconducting rings
Journal Article
·
· Physical Review, B: Condensed Matter; (United States)
- Department of Physics, 1110 West Green Street, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States) Materials Research Laboratory, 104 South Goodwin Avenue, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)
- Department of Physics, 1110 West Green Street, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States) Beckman Institute, 405 North Mathews Avenue, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)
- Department of Physics, 1110 West Green Street, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States) Materials Research Laboratory, 104 South Goodwin Avenue, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States) Beckman Institute, 405 North Mathews Avenue, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)
The rate at which dissipative fluctuations occur in narrow superconducting rings is considered within the Little-Langer-Ambegaokar-McCumber-Halperin framework. The mesoscopic regime, in which the ring circumference [ital L] does not greatly exceed the correlation length [xi], is specifically addressed. In this regime, significant differences arise between models that mimic voltage and current sources, the former (latter) exhibiting corrections to the fluctuation rate algebraic in [xi]/[ital L] (exponentially small in [ital L]/[xi]). The theory employs Forman's elaboration of the Gel'fand-Yaglom technique for computing fluctuation determinants.
- OSTI ID:
- 5404073
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 49:1; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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