Department of Physics and Astronomy: Publications and Other Research
Date of this Version
December 1992
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.
Comments
Published by American Physical Society.Phys. Rev. Lett., 69, 3816(1992). http://prl.aps.org. Copyright © 1992 American Physical Society. Permission to use.