Phase Dynamics in Intrinsic Josephson Junctions and its Electrodynamics

Abstract

We present a theoretical description of the phase dynamics and its corresponding electrodynamics in a stack of inductively coupled intrinsic Josephson junctions of layered high-$T_c$ superconductors in the absence of an external magnetic field. Depending on the spatial structure of the gauge invariant phase difference, the dynamic state is classified into: state with kink, state without kink, and state with solitons. It is revealed that in the state with phase kink, the plasma is coupled to the cavity and the plasma oscillation is enhanced. In contrast, in the state without kink, the plasma oscillation is weak. It points a way to enhance the radiation of electromagnetic from high-$T_c$ superconductors. We also perform numerical simulations to check the theory and a good agreement is achieved. The radiation pattern of the state with and without kink is calculated, which may serve as a fingerprint of the dynamic state realized by the system. At last, the power radiation of the state with solitons is calculated by simulations. The possible state realized in the recent experiments is discussed in the viewpoint of the theoretical description. The state with kink is important for applications including terahertz generators and amplifiers.

14 pages, 13 figures

References in corpus (8)

• Hot spots and waves in Bi2Sr2CaCu2O8 intrinsic Josephson junction stacks -a study by Low Temperature Scanning Laser Microscopy
• Possible Dynamic States in Inductively Coupled Intrinsic Josephson Junctions of Layered High-$T_c$ Superconductors
• Radiation Due to Josephson Oscillations in Layered Superconductors
• Resonant electromagnetic emission from intrinsic Josephson-junction stacks with laterally modulated Josephson critical current
• Josephson-vortex-flow terahertz emission in layered high-$T_c$ superconducting single crystals
• Alternating dynamic state in intrinsic Josephson-junction stacks self-generated by internal resonance
• Computer Simulation on Terahertz Emission from Intrinsic Josephson Junctions of High-T_c Superconductors
• Three-Dimensional Phase-Kink State in Thick Stack of Josephson Junctions and Terahertz Radiation

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• Phase dynamics of inductively coupled intrinsic Josephson junctions and terahertz electromagnetic radiation
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• Stability of dynamic coherent states in intrinsic Josephson-junction stacks near internal cavity resonance
• Cavity mode waves during terahertz radiation from rectangular Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ mesas
• Cavity phenomena in mesas of cuprate high-$T_c$ superconductors under voltage bias
• In-plane dissipation as a possible synchronization mechanism for terahertz radiation from intrinsic Josephson junctions of layered superconductors
• Monolithic superconducting emitter of tunable circularly polarized terahertz radiation
• Synchronization of One Dimensional Array of Point Josephson Junctions Coupled to a Common Load
• Stationary phase-kink states and dynamical phase transitions controlled by surface impedance in THz wave emission from intrinsic Josephson junctions
• Optimal Condition for Strong Terahertz Radiation from Intrinsic Josephson Junctions
• Response and Amplification of Terahertz Electromagnetic Waves in Intrinsic Josephson Junctions of Layered High-Tc Superconductor
• Synchronization of Josephson oscillations in mesa array of BSCCO single crystal through the Josephson plasma waves in base crystal
• Terahertz field control of interlayer transport modes in cuprate superconductors
• Mutual synchronization of two stacks of intrinsic Josephson junctions in cuprate superconductors
• Linewidth of the electromagnetic radiation from Josephson junctions near cavity resonances
• Terahertz Radiation Power Characterization and Optimization of Stack of Intrinsic Josephson Junctions
• Stability of the Kink State in a Stack of Intrinsic Josephson Junctions
• High Power and Wideband Terahertz Modulator Using c-Axis Current Controlled Layered Superconductors
• Increasing THz Radiation Power and Monochromaticity Using Optically Induced Photonic Crystal in Layered Superconductors