Effect of Thermal Phase Fluctuations on the Superfluid Density of Two-Dimensional Superconducting Films
Stefan J. Turneaure, Thomas R. Lemberger, John M. Graybeal
DOI 10.1103/PhysRevLett.84.987 · Physical Review Letters
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Abstract
High precision measurements of the complex sheet conductivity of superconducting a−Mo77Ge23 thin films have been made from 0.4 K through Tc. A sharp drop in the inverse sheet inductance, L−1T, is observed at a temperature, Tc, which lies below the mean-field transition temperature Tc0. Just below Tc, the suppression of L−1T below its mean-field value indicates that longitudinal phase fluctuations have nearly their full classical amplitude, but they disappear rapidly as T decreases. We argue that there is a quantum crossover at about 0.94Tc0, below which classical phase fluctuations are suppressed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Mo77Ge23 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.05 | Pressure not reported | onset |
| Mo77Ge23 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.442 | Pressure not reported | onset |
| Mo77Ge23 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.917 | Pressure not reported | onset |
| Mo77Ge23 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.499 | Pressure not reported | onset |
| Mo77Ge23 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.998 | Pressure not reported | onset |
| Mo77Ge23 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.734 | Pressure not reported | onset |
| Mo77Ge23 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.999 | Pressure not reported | onset |
| InOx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.25 | Pressure not reported | onset |
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