Surface Josephson plasma waves in layered superconductors

Abstract

We predict the existence of surface waves in layered superconductors in the THz frequency range, below the Josephson plasma frequency ${\omega }_J$. This wave propagates along the vacuum-superconductor interface and dampens in both transverse directions out of the surface (i.e., towards the superconductor and towards the vacuum). This is the first prediction of propagating surface waves in any superconductor. These predicted surface Josephson plasma waves are important for different phenomena, including the complete suppression of the specular reflection from a sample (Wood's anomalies) and a huge enhancement of the wave absorption (which can be used as a THz detector).

4 pages, 2 figures

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• Terahertz superconducting plasmonic hole array
• Layered superconductors as negative-refractive-index metamaterials
• Surface waves versus negative refractive index in layered superconductors
• Shape waves in 2D Josephson junctions: exact solutions and time dilation
• Surface Plasma Waves Across the Layers of Intrinsic Josephson Junctions
• Conversion of terahertz wave polarization at the boundary of a layered superconductor due to the resonance excitation of oblique surface waves
• Resonance effects due to the excitation of surface Josephson plasma waves in layered superconductors
• Terahertz field control of interlayer transport modes in cuprate superconductors
• Oblique surface Josephson plasma waves in layered superconductors
• Hysteretic jumps in the response of layered superconductors to electromagnetic fields
• Quantum electrodynamics and photon-assisted tunnelling in long Josephson junctions
• Self-induced THz-waves transmissivity of waveguides with finite-length layered superconductors
• Coherent emission from disordered arrays of driven Josephson vortices
• Josephson surface plasmons in spatially confined cuprate superconductors
• Theory for Anomalous Terahertz Emission in Striped Cuprate Superconductors
• Effect of Charge-neutrality Breaking on Localized Terahertz Waves in a Plate of Layered Superconductor
• Enhanced coherent terahertz emission from critical superconducting fluctuations in YBa${}_2$Cu${}_3$O${}_{6.6}$