Large-N transition temperature for superconducting films in a magnetic field
L. M. Abreu, A. P. C. Malbouisson, J. M. C. Malbouisson, A. E. Santana
DOI 10.1103/PhysRevB.67.212502 · Physical Review B
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Abstract
We consider the N-component Ginzburg-Landau model in large N limit, the system being embedded in an external constant magnetic field and confined between two parallel planes a distance L apart from one another. On physical grounds, this corresponds to a material in the form of a film in the presence of an external magnetic field. Using techniques from dimensional and ζ-function regularization, modified by the external field and the confinement conditions, we investigate the behavior of the system as a function of the film thickness L. This behavior suggests the existence of a minimal critical thickness below which superconductivity is suppressed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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