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Title: Microscopic theory of thermal phase slips in clean narrow superconducitng wires.

Abstract

We consider the structure of a thermal phase-slip center for a simple microscopic model of a clean one-dimensional superconductor in which superconductivity occurs only within one conducting channel or several identical channels. Surprisingly, the Eilenberger equations describing the saddle-point configuration allow for an exact analytical solution in the whole temperature and current range. This solution allows us to derive a closed expression for the free-energy barrier, which we use to compute its temperature and current dependences.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
914947
Report Number(s):
ANL/MSD/JA-58535
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US200817%%27
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys. Rev. Lett.; Journal Volume: 98; Journal Issue: 2007
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; ANALYTICAL SOLUTION; FREE ENERGY; SUPERCONDUCTING WIRES; SUPERCONDUCTIVITY; PHASE DIAGRAMS

Citation Formats

Zharov, A., Lopatin, A., Koshelev, A. E., Vinokur, V. M., Materials Science Division, and Illinois Inst. Tech. Microscopic theory of thermal phase slips in clean narrow superconducitng wires.. United States: N. p., 2007. Web. doi:10.1103/PhysRevLett.98.197005.
Zharov, A., Lopatin, A., Koshelev, A. E., Vinokur, V. M., Materials Science Division, & Illinois Inst. Tech. Microscopic theory of thermal phase slips in clean narrow superconducitng wires.. United States. doi:10.1103/PhysRevLett.98.197005.
Zharov, A., Lopatin, A., Koshelev, A. E., Vinokur, V. M., Materials Science Division, and Illinois Inst. Tech. Mon . "Microscopic theory of thermal phase slips in clean narrow superconducitng wires.". United States. doi:10.1103/PhysRevLett.98.197005.
@article{osti_914947,
title = {Microscopic theory of thermal phase slips in clean narrow superconducitng wires.},
author = {Zharov, A. and Lopatin, A. and Koshelev, A. E. and Vinokur, V. M. and Materials Science Division and Illinois Inst. Tech.},
abstractNote = {We consider the structure of a thermal phase-slip center for a simple microscopic model of a clean one-dimensional superconductor in which superconductivity occurs only within one conducting channel or several identical channels. Surprisingly, the Eilenberger equations describing the saddle-point configuration allow for an exact analytical solution in the whole temperature and current range. This solution allows us to derive a closed expression for the free-energy barrier, which we use to compute its temperature and current dependences.},
doi = {10.1103/PhysRevLett.98.197005},
journal = {Phys. Rev. Lett.},
number = 2007,
volume = 98,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}
  • We present a microscopic study of the quantum fluctuations of the superconducting order parameter in thin homogeneous superconducting wires at all temperatures below T{sub c}. The rate of quantum phase-slip processes determines the resistance R(T) of the wire, which is observable in very thin wires, even at low temperatures. Furthermore, we predict a new low-temperature metallic phase below a critical wire thickness in the 10-nm range, in which quantum phase slips proliferate. {copyright} {ital 1997} {ital The American Physical Society}
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