Critical fluctuations in high-temperature superconductors and the Ettingshausen effect
Salman Ullah, Alan T. Dorsey
DOI 10.1103/PhysRevLett.65.2066 · Physical Review Letters
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Abstract
We study the fluctuation Ettingshausen effect in a type-II superconductor using the time-dependent Ginzburg-Landau equation. The free-fluctuation theory predicts a divergence in the Ettingshausen coefficient at T=Tc2(H), in conflict with the recent data of Palstra et al. [Phys. Rev. Lett. 64, 3090 (1990)]. Including interactions through a self-consistent Hartree approximation eliminates the divergence and provides a quantitative explanation of the experiments.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 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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