Volume 68, Number 4, November 2004
|Page(s)||571 - 576|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||27 October 2004|
Critical current-voltage scaling of heavy-ion–irradiated and superconductors
Laboratoire LEMA, UMR 6157 CNRS-CEA, Université F. Rabelais Parc de Grandmont, 37200 Tours, France
2 Laboratoire CRISMAT, CNRS UMR 6508, ENSICAEN 6 Bd du Maréchal Juin, 14050 Caen, France
Corresponding author: firstname.lastname@example.org
Accepted: 21 September 2004
Current-voltage characteristics were investigated in highly anisotropic , and isotropic single crystals which were irradiated in the direction parallel to the c-axis. In the range of magnetic fields from to (where is the matching field), same scaling functions can be used to describe the transition in those two systems. The field- and sample-independent critical exponents, which were found to be , using , are in a very good agreement with numerical simulations for strongly screened vortex line interactions. Moreover, the obtained scalings are the same despite a large difference in anisotropy.
PACS: 74.25.Fy – Transport properties (electric and thermal conductivity, thermoelectric effects, etc.) / 74.25.Qt – Vortex lattices, flux pinning, flux creep / 74.72.Hs – Bi-based cuprates
© EDP Sciences, 2004
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