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Phase Transitions in Dissipative Josephson Chains

Published online by Cambridge University Press:  28 February 2011

P.A. Bobbert ,
R. Fazio ,
Gerd Schon  and
GT. Zimanyi
P.A. Bobbert
Affiliation:
Department of Applied Physics, Delft University of Technology, 2628 CJ Delft, The Netherlands
R. Fazio
Affiliation:
Department of Applied Physics, Delft University of Technology, 2628 CJ Delft, The Netherlands
Gerd Schon
Affiliation:
Department of Applied Physics, Delft University of Technology, 2628 CJ Delft, The Netherlands
GT. Zimanyi
Affiliation:
Department of Physics, University of California, Davis CA 95616
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Abstract

We study the zero temperature phase transitions of a chain of Josephson junctions, taking into account the quantum fluctuations due to the charging energy and the effects of an Ohmic dissipation. We map the problem onto a generalized Coulomb gas model, which then is transformed into a sine-Gordon field theory. Apart from the expected dipole unbinding transition, which describes a transition between globally superconducting and resistive behavior, we find a quadrupole unbinding transition at a critical strength of the dissipation. This transition separates two superconducting states characterized by different local properties.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 195: Symposium S – Physical Phenomena in Granular Materials , 1990 , 357
Copyright
Copyright © Materials Research Society 1990

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References

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