Reflectivity and Microwave Absorption in Crystals with Alternating Intrinsic Josephson Junctions

Abstract

We compute the frequency and magnetic field dependencies of the reflectivity $R(\omega )$ in layered superconductors with two alternating intrinsic Josephson junctions with different critical current densities and quasiparticle conductivities for the electric field polarized along the c-axis. The parameter $\alpha$ describing the electronic compressibility of the layers and the charge coupling of neighboring junctions was extracted for the SmLa${}_{1-x}$Sr${}_x$CuO${}_{4-\delta }$ superconductor from two independent optical measurements, the fit of the loss function $L(\omega )$ at zero magnetic field and the magnetic field dependence of the peak positions in $L(\omega )$. The experiments are consistent with a free electron value for $\alpha$ near the Josephson plasma frequencies.

4 pages, 4 postscript figures, misprints in table corrected

References in corpus (6)

• Transverse optical Josephson plasmons, equations of motion
• Observation of the Transverse Optical Plasmon in SmLa0.8Sr0.2CuO4-d
• C-axis Josephson Plasma Resonance Observed in Tl${}_2$Ba${}_2$CaCu${}_2$O${}_8$ Superconducting Thin Films using Terahertz Time-Domain Spectroscopy
• Nonequilibrium effects due to charge fluctuations in intrinsic Josephson systems
• Optical Properties of Crystals with Spatial Dispersion: Josephson Plasma Resonance in Layered Superconductors
• Magnetic Field Dependence of the Transverse Plasmon in SmLa_0.8Sr_0.2CuO_4

Cited by in corpus (12)

• Surface Josephson plasma waves in layered superconductors
• Optical Properties of Layered Superconductors near the Josephson Plasma Resonance
• Electromagnetic wave refraction at an interface of a double wire medium
• Charge-imbalance effects in intrinsic Josephson systems
• Static charge-imbalance effects in intrinsic Josephson systems
• Collective resonance modes of Josephson vortices in sandwiched stack of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$ intrinsic Josephson junctions
• Optical Resonances in Reflectivity near Crystal Modes with Spatial Dispersion
• Field Dependence of the Josephson Plasma Resonance in Layered Superconductors with Alternating Junctions
• Stationary Charge Imbalance Effect in System of Coupled Josephson Junction
• Shapiro Step at Nonequilibrium Conditions
• Shift of Shapiro Step in High-Temperature Superconductor
• Electronic compressibility and charge imbalance relaxation in cuprate superconductors