| Issue |
Europhys. Lett.
Volume 68, Number 4, November 2004
|
|
|---|---|---|
| Page(s) | 571 - 576 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2004-10236-0 | |
| Published online | 27 October 2004 | |
Critical current-voltage scaling of heavy-ion–irradiated 
and 
superconductors
1
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: ruyter@univ-tours.fr
Received:
3
June
2004
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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