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Stationary phase slip state in quasi-one-dimensional rings

D. Y. Vodolazov·B. J. Baelus·F. M. Peeters
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Abstract

The nonuniform superconducting state in a ring in which the order parameter vanishing at one point is studied. This state is characterized by a jump of the phase by $π$ at the point where the order parameter becomes zero. In uniform rings such a state is a saddle-point state and consequently unstable. However, for non-uniform rings with e.g. variations of geometrical or physical parameters or with attached wires this state can be stabilized and may be realized experimentally.

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D. Y. Vodolazov, B. J. Baelus, F. M. Peeters. 2002-03-09. Stationary phase slip state in quasi-one-dimensional rings. https://doi.org/10.1103/physrevb.66.054531

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