Giant suppression of flux-flow resistivity in heavy-ion irradiated Tl2Ba2Ca2Cu3O10 films: Influence of linear defects on vortex transport

R. C. Budhani, M. Suenaga, S. H. Liou

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Abstract

A large shift of the onset of flux-flow resistivity and the irreversibility line Hirr(T) to higher temperatures is observed in Tl2Ba2Ca2Cu3O10 films containing linear defects created by Ag+21 ion irradiation. The Hirr(T), which has a characteristic ssL shape in highly anisotropic Tl and Bi based cuprates, becomes more like that of YBa2Cu3O7 in the presence of these defects. The Jc at 77 K also shows a large increase as a result of flux localization at the defects. The transport data indicate that in the H-T plane above Hirr(T) of the unirradiated material, an ensemble of unoccupied defects is required for effective pinning of each flux line in the system.

Original languageEnglish (US)
Pages (from-to)3816-3819
Number of pages4
JournalPhysical Review Letters
Volume69
Issue number26
DOIs
StatePublished - Jan 1 1992

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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