Stationary phase slip state in quasi-one-dimensional rings

Details Stationary phase slip state in quasi-one-dimensional rings Stationary phase slip state in quasi-one-dimensional rings

2002-03-09

arxiv.org/abs/cond-mat/0203208v1

Physics

Condensed Matter

Superconductivity

6 pages, 7 figures, RevTex 4.0 style

Scientific paper

10.1103/PhysRevB.66.054531

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 $\pi$ 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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