Classical Phase Fluctuations in High Temperature Superconductors
E. W. Carlson, S. A. Kivelson, V. J. Emery, E. Manousakis
DOI 10.1103/PhysRevLett.83.612 · Physical Review Letters
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Abstract
Phase fluctuations of the superconducting order parameter play a larger role in the cuprates than in conventional BCS superconductors because of the low superfluid density ρs of a doped insulator. In this paper, we analyze an XY model of classical phase fluctuations in the high temperature superconductors using a low temperature expansion and Monte Carlo simulations. In agreement with experiment, the value of ρs at temperature T=0 is a quite robust predictor of Tc, and the evolution of ρs with T, including its T-linear behavior at low temperature, is insensitive to microscopic details.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ 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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