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| Reference : Superconductivity fluctuations in Bi(Pb) based granular ceramics superconductors: eviden... |
| Scientific journals : Article | |||
| Physical, chemical, mathematical & earth Sciences : Physics | |||
| http://hdl.handle.net/2268/131157 | |||
| Superconductivity fluctuations in Bi(Pb) based granular ceramics superconductors: evidence for fractal behavior | |
| English | |
Ausloos, Marcel  [Université de Liège - ULg > Département de physique > Département de physique > >] | |
| Laurent, Christian [Université de Liège - ULg > Institut d'Electricité Montefiore B28 > S.U.P.R.A.S. > >] | |
| Patapis, S. K. [> > > >] | |
| Politis, C. [> > > >] | |
| Luo, H. L. [> > > >] | |
| Godelaine, P. A. [> > > >] | |
| Gillet, François [Université de Liège - ULg > Département des sciences de la vie > Génétique] | |
| Dang, A. [> > > >] | |
| Cloots, Rudi [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT] | |
| 1991 | |
| Zeitschrift für Physik. B, Condensed Matter | |
| 83 | |
| 3 | |
| 355-359 | |
| International | |
| 0722-3277 | |
| [en] We report precise measurements of the electrical resistivity in three different Bi(Pb) based granular ceramics superconductors. We show that a single critical exponent (5/6) describes the superconductivity fluctuations. Such a critical exponent indicates a fractal behavior of the superconducting path. Our results thus indicate a strict two dimensional fluctuation percolation set (below the superconductivity onset temperature 195 K down to T(c)), and provide some proof for Tarascon et al. "shell conductivity path" hypothesis. We estimate the shell thickness to be of the order of 10 angstrom. | |
| Researchers ; Professionals | |
| http://hdl.handle.net/2268/131157 |
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