Intrinsic Josephson effect and nonequilibrium soliton structures in two-gap superconductors

Details Intrinsic Josephson effect and nonequilibrium soliton structures in two-gap superconductors Intrinsic Josephson effect and nonequilibrium soliton structures in two-gap superconductors

2002-07-23

arxiv.org/abs/cond-mat/0207559v1

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.90.047004

We predict a new dynamic state in current-carrying superconductors with multicomponent order parameter. If the current density J exceeds a critical value J_t, an interband breakdown caused by charge imbalance of nonequilibrium quasiparticles occurs. For J > J_t, the electric field penetrating from current leads gives rise to various static and dynamic soliton phase textures, and voltage oscillations similar to the nonstationary Josephson effect. We propose experiments to observe these effects which would probe the multicomponent nature of the superconducting order parameter.

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