Superconductor-insulator transition and the size effect on transport properties observedin ultrathin Y0.9Pr0.1Ba2Cu3Oy films
U. Kabasawa, T. Fukazawa, H. Hasegawa, Y. Tarutani, K. Takagi
DOI 10.1103/PhysRevB.55.R716 · 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
Transport properties of ultrathin Y0.9Pr0.1Ba2Cu3Oy films were studied as a function of thickness and length scale. Samples having planar YBa2Cu3Ox-ultrathin Y0.9Pr0.1Ba2Cu3Oy-YBa2Cu3Ox structures were used. The Y0.9Pr0.1Ba2Cu3Oy channel layer exhibited a superconductor-insulator (SI) transition when the film thickness was below ∼8 nm. The critical sheet conductance of the SI transition was near 4e2h. The sheet conductance of insulator-phase channels shorter than 10 μm was higher than that of 100-μm-long channels with the same thickness due to a size effect. The results suggest that a thickness-dependent correlation length may exist in the insulator-phase Y0.9Pr0.1Ba2Cu3Oy.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Y0.9Pr0.1Ba2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 75 | Pressure not reported | midpoint |
Similar papers
Comparative study of superconducting energy gaps in oriented films and polycrystalline bulk samples of Y-Ba-Cu-O
similarity 0.96R. T. Collins et al.
Source status unknown — claims are unverified
Effect of switching over YBa2Cu3Ox thin films from the superconducting to the normal state under the action of field-emission currents
similarity 0.96S. I. Shkuratov et al.
Source status unknown — claims are unverified
Scaling behavior of fluctuation conductivity of high-temperature superconductors in a magnetic field
similarity 0.96D. H. Kim et al.
Source status unknown — claims are unverified
Persistent photoconductivity in insulating and superconducting YBa2Cu3Ox thin films: Temperature and spectral dependence
similarity 0.96S. L. Bud’ko et al.
Source status unknown — claims are unverified
Charging effect in partially oxygen-depleted superconducting Y-Ba-Cu-O thin films
similarity 0.95W. Kula & Roman Sobolewski
Source status unknown — claims are unverified
Crystalline perfection of as-deposited high-Tc superconducting thin-film surfaces: ion channeling and x-ray photoelectron spectroscopy study
similarity 0.95X. D. Wu et al.
Source status unknown — claims are unverified