Charge-imbalance effects in intrinsic Josephson systems

Abstract

We report on two types of experiments with intrinsic Josephson systems made from layered superconductors which show clear evidence of nonequilibrium effects: 1. In 2-point measurements of IV-curves in the presence of high- frequency radiation a shift of the voltage of Shapiro steps from the canonical value hf/(2e) has been observed. 2. In the IV-curves of double-mesa structures an influence of the current through one mesa on the voltage measured on the other mesa is detected. Both effects can be explained by charge-imbalance on the superconducting layers produced by the quasi-particle current, and can be described successfully by a recently developed theory of nonequilibrium effects in intrinsic Josephson systems.

8pages, 9figures, submitted to Phys. Rev. B

References in corpus (4)

• Static Charge Coupling of Intrinsic Josephson Junction
• Nonequilibrium effects due to charge fluctuations in intrinsic Josephson systems
• Reflectivity and Microwave Absorption in Crystals with Alternating Intrinsic Josephson Junctions
• Optical Properties of Crystals with Spatial Dispersion: Josephson Plasma Resonance in Layered Superconductors

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• Dynamic properties of asymmetric double Josephson junction stack with quasiparticle imbalance
• Shapiro Step at Nonequilibrium Conditions
• Stationary Charge Imbalance Effect in System of Coupled Josephson Junction
• Electronic compressibility and charge imbalance relaxation in cuprate superconductors