Twin-boundary effect on the Hall conductivity in high-Tc superconducting thin films
A. Casaca, G. Bonfait, M. Getta, M. Lenkens, G. Müller
DOI 10.1103/PhysRevB.56.5677 · 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 pinning influence on the Hall conductivity in the mixed state of high-temperature superconductors is still experimentally and theoretically controversial. In this work, the effect of twin-boundary pinning on the Hall conductivity is studied, with particular emphasis on the high-field results. The longitudinal and Hall resistivities were measured in YBa2Cu3O7−δ and YbBa2Cu3O7−δ thin films, up to 18 T: a signature due to the pinning of the vortices in the twin boundaries is clearly visible in the longitudinal resistivity ρxx and in the Hall resistivity ρxy, but disappears when the Hall conductivity σxy≅ρxy/ρxx2 is computed. However, at lower temperatures, a minimum of dσxy/dT is proved to be a weak signature of the twin-boundary pinning. These results are confirmed by similar measurements done on one sample rotated 16° away from the magnetic field direction.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YbBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 89.2 | Pressure unresolved | midpoint |
| YbBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 89.4 | Pressure unresolved | midpoint |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure unresolved | midpoint |
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Tl2Ba2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Correlation between longitudinal and Hall resistivity in superconductor films
similarity 0.97X.-M. Zhu & E. B. Nyeanchi
Source status unknown — claims are unverified
Correlations between the Hall coefficient and the superconducting transport properties of oxygen-deficient YBa2Cu3O7−δ epitaxial thin films
similarity 0.96E. C. Jones et al.
Source status unknown — claims are unverified
Mixed-state Hall-effect studies in high-Tc-superconducting (YBa2Cu3O7−δ)n/(PrBa2Cu3O7−δ)m superlattices
similarity 0.96Kebin Li 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
Tunneling between Dissimilar High- Tc Oxide Superconductors
similarity 0.96T. Imaizumi et al.
Source status unknown — claims are unverified
Spatial dichotomy of quasiparticle dynamics in underdoped thin-film YBa2Cu3O7−δ superconductors
similarity 0.95C. W. Luo et al.
Source status unknown — claims are unverified