Brownian motion of vortex-antivortex excitations in very thin films of Bi2Sr2CaCu2O8

C. T. Rogers, K. E. Myers, J. N. Eckstein, I. Bozovic

Research output: Contribution to journalArticlepeer-review

Abstract

Low-frequency magnetic noise and mutual inductance measurements indicate that the electromagnetic response of very thin Bi2Sr2CaCu2O8 films is dominated by Arrhenius law diffusion of thermally created vortices and antivortices. We explain the measured diffusion coefficient via pinning of the vortex cores on a single type of line defect. The observed superfluid response differs from simple Kosterlitz-Thouless predictions as it is predominantly controlled by vortex-pin rather than vortex-antivortex interactions.

Original languageEnglish (US)
Pages (from-to)160-163
Number of pages4
JournalPhysical review letters
Volume69
Issue number1
DOIs
StatePublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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