Vortex Fluctuations in the Critical Casimir Effect of Superfluid and Superconducting Films
Gary A. Williams
DOI 10.1103/PhysRevLett.92.197003 · Physical Review Letters
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Abstract
Vortex-loop renormalization techniques are used to calculate the magnitude of the critical Casimir forces in superfluid films. The force is found to become appreciable when the size of the thermal vortex loops is comparable to the film thickness, and the results for T<Tc are found to match very well with perturbative renormalization theories that have been carried out only for T>Tc. When applied to a high-Tc superconducting film connected to a bulk sample, the Casimir force causes a voltage difference to appear between the film and the bulk, and estimates show that this may be readily measurable.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCuO2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 84.9 | Pressure not reported | unknown |
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