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EnglishWe 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.
| Data di pubblicazione: | 2006 | |
| Titolo: | General interpolation scheme for thermal fluctuations in superconductors | |
| Autori: | ||
| Citazione: | 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. | |
| Rivista: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevB.73.104517 | |
| 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. | |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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|---|---|---|---|---|
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http://hdl.handle.net/10447/65076
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