Zusammenfassung
Nonequilibrium effects created by stationary current injection in layered d-wave superconductors forming a stack of intrinsic Josephson junctions are studied. Starting from a nonequilibrium Green function theory we derive miicroscopic expressions for the charge imbalance (difference between electronlike and holelike quasi-particles) on the superconducting layers and investigate its influence on ...
Zusammenfassung
Nonequilibrium effects created by stationary current injection in layered d-wave superconductors forming a stack of intrinsic Josephson junctions are studied. Starting from a nonequilibrium Green function theory we derive miicroscopic expressions for the charge imbalance (difference between electronlike and holelike quasi-particles) on the superconducting layers and investigate its influence on the quasiparticle current between the layers. This nonequilibrium effect leads to shifts in the current-voltage curves of the stack. The theory is applied to the interpretation of recent current injection experiments in double-mesa structures.
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