Low Temperature Physics: 43, 296 (2017); https://doi.org/10.1063/1.4977740
Fizika Nizkikh Temperatur: Volume 43, Number 2 (February 2017), p. 360-367    ( to contents , go back )

Anomalous dispersion of the surface and waveguide modes in plate of layered superconductor

S.S. Apostolov1,2, V.I. Havrilenko2, Z.A. Маizelis1,2, and V.A. Yampol’skii1,2

1O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12 Ac. Proskury, Kharkiv 61085, Ukraine

2V.N. Karazin Kharkiv National University, 4 Svobody Sq., Kharkiv 61022, Ukraine
E-mail: yam@ire.kharkov.ua
pos Анотація:

Received August 25, 2016

Abstract

The linear surface and waveguide modes of trans-verse magnetic polarization propagating in the plate of the layered superconductor placed in a homogeneous dielectric environment are theoretically studied. It is assumed that the superconducting layers are orthogonal to the plate surface and the waves propagate across the layers. The dispersion relations for the symmetric and antisymmetric modes by the magnetic field are derived. It is shown that the dispersion of these modes is anomalous in a certain range of frequencies and wave numbers. The conditions of vanishing the mode group velocity are found.

PACS: 74.72.–h Cuprate superconductors;
PACS: 74.50.+r Tunneling phenomena; Josephson effects;
PACS: 74.78.Fk Multilayers, superlattices, heterostructures.

Key words: layered superconductor, surface and wave-guide modes, polarization.

Published online: December 26, 2016

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