Evidence for two-dimensional thermal fluctuations of the vortex structure in Bi2.15Sr1.85CaCu2O8+δ from muon spin rotation experiments

S. L. Lee*, M. Warden, H. Keller, J. W. Schneider, D. Zech, P. Zimmermann, R. Cubitt, E. M. Forgan, M. T. Wylie, P. H. Kes, T. W. Li, A. A. Menovsky, Z. Tarnawski

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)

Abstract

In the mixed state of Bi2.15Sr1.85CaCu2O8+δ the temperature dependence of the muon spin rotation (μSR) linewidth is found to have a strong field dependence, which is attributed to the effect on the line shapes resulting from thermal fluctuations of the vortex positions. This provides important information concerning the form of the fluctuations and moreover gives a measure of the anisotropy parameter γ. By combining this result with a μSR determination of the penetration depth λ(T) and the melting line Bm(T), we are further able to obtain the Lindemann number cL.

Original languageEnglish
Pages (from-to)922-925
Number of pages4
JournalPhysical Review Letters
Volume75
Issue number5
DOIs
Publication statusPublished - 1995

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