Paraconductivity at high reduced temperatures in YBa2Cu3O7−δ superconductors
Carlos Carballeira, Severiano R. Currás, Jose Viña, José A. Veira, Manuel V. Ramallo, Félix Vidal
DOI 10.1103/PhysRevB.63.144515 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
By using high quality single crystals and epitaxial thin films, the in-plane paraconductivity in almost optimally doped YBa2Cu3O7−δ, with Tc0≳92K, was determined well inside the so-called short-wavelength fluctuation regime, which corresponds to reduced temperatures, ε≡ln(T/Tc0), above typically ε=0.1. It is then shown that these data may be explained in terms of the Gaussian-Ginzburg-Landau approach for bilayered superconductors by introducing a total energy cutoff, instead of the momentum cutoff approximation always used until now. These results seem to confirm the absence of appreciable pseudogap effects on the in-plane resistivity in optimally doped YBa2Cu3O7−δ superconductors.
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. | 92 | Pressure not reported | onset |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | onset |
Similar papers
Origin of the variation of Tc with superconducting layer thickness and separation in YBa2Cu3O7−x/PrBa2Cu3O7 superlattices
similarity 0.96R. G. Goodrich et al.
Source status unknown — claims are unverified
Paraconductivity and excess Hall effect in epitaxial YBa2Cu3O7 films induced by superconducting fluctuations
similarity 0.96W. Lang et al.
Source status unknown — claims are unverified
Ion-channeling anomalies at the superconducting transition temperature in single-crystal YBa2Cu3O7−y
similarity 0.96T. Haga et al.
Source status unknown — claims are unverified
Unusual magnetic-field dependence of the electrothermal conductivity in the mixed state of cuprate superconductors
similarity 0.96J. A. Clayhold et al.
Source status unknown — claims are unverified
Depression and broadening of the superconducting transition in superlattices based on YBa2Cu3O7−δ: Influence of the barrier layers
similarity 0.96David P. Norton et al.
Source status unknown — claims are unverified
Dynamic conductivity and coherence peak in YBa2Cu3O7 superconductors
similarity 0.96Martin C. Nuss et al.
Source status unknown — claims are unverified