| Issue |
Europhys. Lett.
Volume 58, Number 5, June 2002
|
|
|---|---|---|
| Page(s) | 705 - 711 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00406-6 | |
| Published online | 01 May 2002 | |
Critical exponent 
of the lattice London
superconductor and vortex loops in the 3D XY model
Department of Theoretical Physics, Umeå University -
901 87 Umeå, Sweden
Received:
1
February
2002
Accepted:
5
March
2002
The anomalous dimension of the lattice London superconductor is
determined from finite-size scaling of the susceptibility to be
. It is furthermore found that the vanishing
of the vortex loop line tension in the 3D XY model, which should be
related to that exponent, agrees reasonable well with this value of
. Deviations from this behavior are however also
identified and it is suggested that they are an effect of the vortex
loop intersections and therefore will vanish only in the limit of
low vortex density.
PACS: 64.60.Cn – Order-disorder transformations; statistical mechanics of model systems / 74.40.+k – Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.) / 64.60.Fr – Equilibrium properties near critical points, critical exponents
© EDP Sciences, 2002
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