Dissipation mechanism in a high-Tc granular superconductor: Applicability of a phase-slip model
A. C. Wright, K. Zhang, A. Erbil
DOI 10.1103/PhysRevB.44.863 · 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
The magnetoresistance and I-V characteristics for the 110-K phase of a polycrystalline Bi-Pb-Sr-Ca-Cu-O superconductor are reported. The Josephson-junction model of Ambegaokar and Halperin fits well to the data and yields the temperature and field dependence of the phase-slip activation energy U0. The field dependence of U0 is explained by Fraunhofer interference under magnetic field within weak links originated from the sample microstructure. We suggest that this model may have general applicability to dissipation in both granular and single-crystal materials.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi1.7Pb0.2Sb0.1Sr2Ca2Cu3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 110 | Pressure not reported | onset |
Similar papers
Superconductivity fluctuations in electrical and thermoelectrical properties of granular ceramic superconductors: Homogeneous versus fractal behavior
similarity 0.97P. Clippe et al.
Source status unknown — claims are unverified
Possible structural phase transition near 210 K of single-phase Bi(Pb)-Sr-Ca-Cu-O superconducting ceramics
similarity 0.96He Yusheng et al.
Source status unknown — claims are unverified
Fluctuation conductivity and microscopic granularity in Bi-based high-temperature superconductors
similarity 0.96A. R. Jurelo et al.
Source status unknown — claims are unverified
Effect of superimposed electrical and thermal gradients in superconducting polycrystalline Bi-Pb-Sr-Ca-Cu-O
similarity 0.96Richard A. Doyle & Vladimir V. Gridin
Source status unknown — claims are unverified
Formation of the 110-K superconducting phase via the amorphous state in the Bi-Sr-Ca-Cu-O system
similarity 0.95Donglu Shi et al.
Source status unknown — claims are unverified
Effect of lead substitution in bismuth-based cuprate systems containing both low-Tc and high-Tc phases
similarity 0.95A. K. Bandyopadhyay et al.
Source status unknown — claims are unverified