Abstract

Effect of significant retardation of an electromagnetic wave in microstrip microwave systems, where the phase velocity becomes less than the Fermi velocity, opens a novel experimental approach to investigations of properties and pairing mechanisms of carriers in superconductors by measurements of spatial dispersion effects at low temperatures. In this study, we present for the first time the semiclassical model of the current carrier dynamics depending on the frequency and phase velocity of electromagnetic wave, which accounts the unlocal spatial dispersion effects. These equations make it possible to perform a comparative analysis of the spatial effects observed in high-temperature superconductors, conventional superconductors, and normal metals.

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