We present a general interpolation theory for the phenomenological effects of thermal fluctuations in superconductors. Fluctuations are described by a simple gauge invariant extension of the gaussian effective potential for the Ginzburg-Landau static model. The approach is shown to be a genuine variational method, and to be stationary for infinitesimal gauge variations around the Landau gauge. Correlation and penetration lengths are shown to depart from the mean field behaviour in a more or less wide range of temperature below the critical regime, depending on the class of material considered. The method is quite general and yields a very good interpolation of the experimental data for very different materials.

Marotta, L., Camarda, M., Angilella, G., Siringo F. (2006). General interpolation scheme for thermal fluctuations in superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 73(10), 1-7 [10.1103/PhysRevB.73.104517].

General interpolation scheme for thermal fluctuations in superconductors

MAROTTA, Luca;
2006-01-01

Abstract

We present a general interpolation theory for the phenomenological effects of thermal fluctuations in superconductors. Fluctuations are described by a simple gauge invariant extension of the gaussian effective potential for the Ginzburg-Landau static model. The approach is shown to be a genuine variational method, and to be stationary for infinitesimal gauge variations around the Landau gauge. Correlation and penetration lengths are shown to depart from the mean field behaviour in a more or less wide range of temperature below the critical regime, depending on the class of material considered. The method is quite general and yields a very good interpolation of the experimental data for very different materials.
Marotta, L., Camarda, M., Angilella, G., Siringo F. (2006). General interpolation scheme for thermal fluctuations in superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 73(10), 1-7 [10.1103/PhysRevB.73.104517].
File in questo prodotto:
File Dimensione Formato  
marotta.pdf

accesso aperto

Dimensione 97.91 kB
Formato Adobe PDF
97.91 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/65076
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 18
  • ???jsp.display-item.citation.isi??? 17
social impact