High-frequency vortex dynamics in YBa2Cu3O7

M. Golosovsky*, M. Tsindlekht, D. Davidov

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

246 Scopus citations

Abstract

We present a phenomenological description of the high-frequency vortex dynamics in YBa2Cu3O7 and discuss the main parameters related to vortex motion, namely the viscous drag coefficient η, the pinning constant kp (Labusch parameter) and the depinning frequency ω0. We demonstrate experimental results on the angular and temperature dependence of η, kp and ω0 in YBa2Cu3O7 and compare these results with existing models. We show how studies of the vortex viscosity may yield information on the superclean limit. This limit corresponds to the formation of the discrete excitation spectrum in the vortex core due to quantum confinement and small coherence length. From the low-temperature viscosity data we conclude that the superclean limit in YBa2Cu3O7 is reached for magnetic field perpendicular to the c-axis.

Original languageEnglish
Pages (from-to)1-15
Number of pages15
JournalSuperconductor Science and Technology
Volume9
Issue number1
DOIs
StatePublished - 1996

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