Computer Simulation on Terahertz Emission from Intrinsic Josephson Junctions of High-T_c Superconductors

Abstract

Solving coupled nonlinear sine-Gordon equations and Maxwell equations numerically, we study the electromagnetic and superconducting properties of the single crystal of high-$T_c$ superconductor $\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{r}}_2\mathrm{CaC}{\mathrm{u}}_2{\mathrm{O}}_{8+\delta }$ with a static magnetic field applied parallel to the $ab$-plane and a dc current fed in along the c-axis. Cavity resonances of transverse plasma occur in the intrinsic Josephson junctions with frequencies in terahertz regime. It is revealed that the electromagnetic wave can transmit from the junctions into space. The emitted energy counted by the Poynting vector is about $400W/c{\mathrm{m}}^2$. The frequency as well as the energy of emission can be tuned almost continuously by the current and magnetic field.

5pages, 5figures

References in corpus (5)

• Emission of continuous coherent terahertz waves with tunable frequency by intrinsic Josephson junctions
• Josephson-vortex-flow terahertz emission in layered high-$T_c$ superconducting single crystals
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• Dynamic structure selection and instabilities of driven Josephson lattice in high-temperature superconductors
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Cited by in corpus (22)

• Geometrical Resonance Conditions for THz Radiation from the Intrinsic Josephson Junctions in Bi2Sr2CaCu2O8+d
• Possible Dynamic States in Inductively Coupled Intrinsic Josephson Junctions of Layered High-$T_c$ Superconductors
• Phase dynamics of inductively coupled intrinsic Josephson junctions and terahertz electromagnetic radiation
• Alternating dynamic state in intrinsic Josephson-junction stacks self-generated by internal resonance
• Evidence for a Dual-Source Mechanism of THz Radiation from Rectangular Mesas of Single Crystalline \bm{$\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{r}}_2\mathrm{CaC}{\mathrm{u}}_2{\mathrm{O}}_{8+\delta }$} Intrinsic Josephson Junctions
• Radiation from a Josephson STAR-emitter
• Stability of dynamic coherent states in intrinsic Josephson-junction stacks near internal cavity resonance
• Three-Dimensional Phase-Kink State in Thick Stack of Josephson Junctions and Terahertz Radiation
• Emission of Terahertz Waves from Stacks of Intrinsic Josephson Junctions
• 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
• Monolithic superconducting emitter of tunable circularly polarized terahertz radiation
• Phase Dynamics in Intrinsic Josephson Junctions and its Electrodynamics
• 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
• 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
• 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