Intrinsic Josephson Effect and Violation of the Josephson Relation in Layered Superconductors

Details Intrinsic Josephson Effect and Violation of the Josephson Relation in Layered Superconductors Intrinsic Josephson Effect and Violation of the Josephson Relation in Layered Superconductors

1997-04-03

arxiv.org/abs/cond-mat/9704025v1

Physics

Condensed Matter

Superconductivity

11 pages, no figures, revtex, to be published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.78.3551

Equations describing the resistive state of a layered superconductor with anisotropic pairing are derived. The similarity with a stack of Josephson junctions is found at small voltages only, when current density in the direction perpendicular to the layers can be interpreted as a sum of the Josephson superconducting, the Ohmic dissipative and the interference currents. In the spatially uniform state differential conductivity at higher voltages becomes negative. Nonuniformity of the current distribution generates the branch imbalance and violates the Josephson relation between frequency and voltage.

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