Abstract

Novel microwave absorption and dispersion measurements have been performed on polycrystalline samples and well-characterized single-crystal platelets of high-Tc superconductors YBa₂Cu₃O₇₋ₓ. The results are explained in terms of fluxoids and rapid variation of the penetration depth near and below Tc. The microwave absorption increases as a function of the magnetic field as a result of increase in the surface area of the normal-conducting region. By applying a modulating field in a particular manner and from thermodynamic considerations there are strong indications of energy absorption by fluxoids.

Notes

Originally published in Physical Review B 39, 797-800 (1989). doi 10.1103/PhysRevB39.797 (http://link.aps.org/doi/10.1103/PhysRevB39.797).

Keywords

fluxoids, microwave absorption, YBa₂Cu₃O₇₋ₓ, Tc, low field dependence, dispersion measurements, polycrystalline samples, single crystal platelets, energy absorption, modulating fields

Subject Categories

Superconductors, Magnetic fields

Disciplines

Electromagnetics and photonics

Publisher

American Physical Society

Publication Date

1-1-1989

Rights Information

Copyright 1989 American Physical Society

Rights Holder

American Physical Society

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