Stationary phase slip state in quasi-one-dimensional rings
arXiv:cond-mat/0203208 · doi:10.1103/PhysRevB.66.054531
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 $Ï$ 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.
6 pages, 7 figures, RevTex 4.0 style