Magnetic-field dependence of the surface impedance in the mixed state of type-II superconductors

V. A. Berezin*, E. V. Il'Ichev, V. A. Tulin, E. B. Sonin, A. K. Tagantsev, K. B. Traito

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The surface impedance of type-II superconductors in the mixed state has been measured as a function of the magnetic field in the low-frequency limit. At the low magnetic fields close to the lower critical field the surface impedance was observed to be proportional to the vortex density, whereas at higher fields a crossover to the square-root dependence on the vortex density was observed. This behavior agrees with the two-mode electrodynamics in which the penetration of electromagnetic fields into the superconductor in the mixed state is governed by two space scales: (i) the skin-layer width, and (ii) the screening length of the order of the intervortex distance arising from the elasticity of the vortex array.

Original languageEnglish
Pages (from-to)4331-4333
Number of pages3
JournalPhysical Review B
Volume49
Issue number6
DOIs
StatePublished - 1994
Externally publishedYes

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