Thermal conductivity of Ba-K-Bi-O: A contrast to copper oxide superconductors
S. D. Peacor, R. A. Richardson, J. Burm, C. Uher, A. B. Kaiser
DOI 10.1103/PhysRevB.42.2684 · 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
We report measurements of the thermal conductivity, κ(T), of Ba1−xKxBiO3 between temperatures of 70 mK and 300 K. We find that, below the superconducting transition temperature, the behavior of κ(T) is in sharp contrast to that observed in copper-oxide-based superconductors. Measurements in a 6-T magnetic field indicate that, in this material, the thermal conductivity is lower in the superconducting state than it is in the normal state at the same temperature. The information this provides about the strength of the electron-phonon coupling is discussed. Our data show no evidence of the T-linear term in the thermal conductivity below 0.5 K observed in sintered Y- and La-based superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ba1-xKxBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 25.5 | Pressure not reported | onset |
| Ba1-xKxBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 27.5 | Pressure not reported | onset |
| Ba1-xKxBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 23.5 | Pressure not reported | unknown |
| Ba1-xKxBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 25.3 | Pressure not reported | unknown |
Similar papers
Electronic Structure of the High-Tc Superconductor Ba1−xKxBiO3
similarity 0.96L. F. Mattheiss & D. R. Hamann
Source status unknown — claims are unverified
Calculations of the electronic structure and superconducting properties of the Ba(K)Pb(Bi)O3 system
similarity 0.95D. A. Papaconstantopoulos et al.
Source status unknown — claims are unverified
High-energy oxygen phonon modes and superconductivity in Ba1−xKxBiO3: An inelastic-neutron-scattering experiment and molecular-dynamics simulation
similarity 0.95C.-K. Loong et al.
Source status unknown — claims are unverified
Superconductivity in Ba1−xKxBiO3
similarity 0.95Wei Jin et al.
Source status unknown — claims are unverified
Superconducting properties of the Ba1−xRbxBiO3 system
similarity 0.95Izumi Tomeno & Ken Ando
Source status unknown — claims are unverified
Pairing and phase separation in BiO3-based superconductors
similarity 0.95A. A. Aligia & M. Baliña
Source status unknown — claims are unverified