Anisotropy of Heat Conduction in YBa2Cu3O6.9: A Probe of Chain Superconductivity
Robert Gagnon, Song Pu, Brett Ellman, Louis Taillefer
DOI 10.1103/PhysRevLett.78.1976 · Physical Review Letters
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 thermal conductivity κ of YBa2Cu3O6.9 was measured along the a and b axes of detwinned single crystals. Both κa and κb show the usual peak below Tc=93.8K, but a clear additional contribution to the b-axis conduction sets in well below Tc. The difference κb−κa exhibits a peak similar to the peak in the plane conductivity κa but with an onset temperature of 55 K. This result suggests that the CuO chains give rise to a sudden growth in superfluid density at that temperature, as predicted by models of single-electron tunneling between chains and planes.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6.9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93.8 | Pressure not reported | onset |
| YBa2Cu3O6.9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93.8 | Pressure not reported | onset |
Similar papers
Low-energy quasiparticles in cuprate superconductors: A quantitative analysis
similarity 0.96May Chiao et al.
Source status unknown — claims are unverified
Systematics of two-component superconductivity in YBa2Cu3O6.95 from microwave measurements of high-quality single crystals
similarity 0.96H. Srikanth et al.
Source status unknown — claims are unverified
Unconventional energetics of the pseudogap state and superconducting state in high-Tc cuprates
similarity 0.95D. N. Basov et al.
Source status unknown — claims are unverified
Superconductivity and magnetism in the high-Tc superconductor YBaCuO
similarity 0.95J. Z. Sun et al.
Source status unknown — claims are unverified
Room-temperature structure of the 90-K bulk superconductor YBa2Cu3O8−x
similarity 0.95Y. LePage et al.
Source status unknown — claims are unverified
Comparison of the pressure dependencies of Tc in the 90-K superconductors RBa2Cu3Ox (R=Gd,Er,andYb) and YBa2Cu3Ox
similarity 0.95H. A. Borges et al.
Source status unknown — claims are unverified