Millimeter-wave absorption in La-Ba-Cu-O and Y-Ba-Cu-O superconductors
A. T. Wijeratne, G. L. Dunifer, J. T. Chen, L. E. Wenger, E. M. Logothetis
DOI 10.1103/PhysRevB.37.615 · 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
Millimeter-wave absorption in the new high-Tc superconducting materials La-Ba-Cu-O and Y-Ba-Cu-O has been studied at a frequency of 80 GHz over the temperature range 4-300 K and in the presence of magnetic fields 0-5.5 T. It is found that there are strong correlations between the changes in microwave absorption and the superconducting transitions at 30 K for La-Ba-Cu-O and at 90 K for Y-Ba-Cu-O samples. The Y-Ba-Cu-O samples display additional microwave features near 250 K which may be associated with a higher-temperature superconductivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.8Ba0.2CuO4-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure unresolved | midpoint |
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure unresolved | midpoint |
| Y5Ba6Cu11Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91 | Pressure unresolved | midpoint |
Similar papers
Enhancement of Cu-O vibrational modes and superconductivity in YBa2Cu3O7−δ studied by x-ray photoelectron spectroscopy and high-resolution electron-energy-loss spectroscopy
similarity 0.97Y. Fukuda et al.
Source status unknown — claims are unverified
X-ray-absorption studies of YBa2Cu3O7−δ and GdBa2Cu3O7−δ superconductors
similarity 0.97J. B. Boyce et al.
Source status unknown — claims are unverified
Nonlinear microwave absorption in ceramic superconducting Y-Ba-Cu-O
similarity 0.97Sergio M. Rezende & Flavio M. de Aguiar
Source status unknown — claims are unverified
Resonant photoemission study of superconducting Y-Ba-Cu-O
similarity 0.97Richard L. Kurtz et al.
Source status unknown — claims are unverified
Photoemission study of YBa2Cu3O7 through the superconducting transition: Evidence for oxygen dimerization
similarity 0.97D. D. Sarma et al.
Source status unknown — claims are unverified
Structural and superconducting properties of R1−xCaxBa2Cu3O7−δ with 0.50>~x>~0.00
similarity 0.97A. Sedky et al.
Source status unknown — claims are unverified