Stationary Charge Imbalance Effect in System of Coupled Josephson Junction

Abstract

We investigate stationary charge imbalance effect in the system of coupled overdamped Josephson junctions. We show that coupling between junction and nonzero stationary charge imbalance in the resistive state bring to a decrease of the Josephson frequency in the Josephson junctions of the stack. The formed difference in Josephson frequency leads to the nonuniform switch to the Shapiro step regime in the presence of external electromagnetic radiation and appearance of kinks of voltage on the IV-characteristics of the stack. We also show that stationary charge imbalance brings to the slope of the Shapiro step due to the difference of the charge imbalance potential on the edges of the step. The theoretical and experimental results for voltage bias coupled Josephson junctions have been compared with the current bias case.

References in corpus (18)

• Quantum state engineering with Josephson-junction devices
• Quasiparticle relaxation dynamics in superconductors with different gap structures: theory and experiments on YBa_{2}Cu_{3}O_{7-δ}
• Number fluctuations of sparse quasiparticles in a superconductor
• Tuning the Gap of a Superconducting Flux Qubit
• Tunable terahertz emission from Bi2Sr2CaCu2O8+δ mesa devices
• Single Quasiparticle Trapping in Aluminum Nanobridge Josephson Junctions
• Stability of dynamic coherent states in intrinsic Josephson-junction stacks near internal cavity resonance
• Intrinsic Josephson Effect and Violation of the Josephson Relation in Layered Superconductors
• Charge-imbalance effects in intrinsic Josephson systems
• Current noise of a superconducting single electron transistor coupled to a resonator
• Theory for the coupling between longitudinal phonons and intrinsic Josephson oscillations in layered superconductors
• Static Charge Coupling of Intrinsic Josephson Junction
• Nonequilibrium effects due to charge fluctuations in intrinsic Josephson systems
• Optical Properties of Crystals with Spatial Dispersion: Josephson Plasma Resonance in Layered Superconductors
• Reflectivity and Microwave Absorption in Crystals with Alternating Intrinsic Josephson Junctions
• Static charge-imbalance effects in intrinsic Josephson systems
• Coupling of intrinsic Josephson oscillations in layered superconductors by charge fluctuations
• Charge imbalance and Josephson effects in superconductor-normal metal mesoscopic structures

Cited by in corpus (1)

• AC Josephson Signatures of the Superconducting Higgs Mode