The Fluctuation Formation of Phase Solitons in Superconducting Two-Band Bridges
Journal Article
·
· Physics of the Solid State
Abstract—Based on the Ginzburg–Landau theory, the dependence of the threshold energy δF{sub thr} of formation of a phase slip center from the current for a superconducting two-band bridge has been calculated. It has been found that, in the case of sufficiently long bridges and a weak interband Josephson coupling, there is a range of currents at which fluctuation transition from the state of the zero interband phase difference to the states with a phase soliton is possible, which manifests itself in a considerable decrease in the threshold energy δF{sub thr}, and a fluctuation change in the number of phase solitons in the bridge. In the case of a strong interband coupling, no fluctuation formation of phase solitons occurs and the dependence δF{sub thr}(I) tends to the expression obtained earlier by Langer and Ambegaokar for a single-band superconductor.
- OSTI ID:
- 22770931
- Journal Information:
- Physics of the Solid State, Journal Name: Physics of the Solid State Journal Issue: 11 Vol. 60; ISSN 1063-7834
- Country of Publication:
- United States
- Language:
- English
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