Universal Heat Conduction in YBa{sub 2}Cu{sub 3}O{sub 6.9}
Journal Article
·
· Physical Review Letters
- Department of Physics, McGill University, Montreal, Quebec, H3A 2T8 (CANADA)
- Laboratoire de Physique des Solides (CNRS), Universite Paris-Sud, 91405 Orsay (France)
The thermal conductivity of YBa{sub 2}Cu {sub 3}O{sub 6.9} was measured at low temperatures in untwinned single crystals with concentrations of Zn impurities from 0{percent} to 3{percent} of Cu. A linear term {kappa}{sub 0}/T=0.19mW K{sup {minus}2}cm{sup {minus}1} is clearly resolved as T{r_arrow}0, and found to be virtually independent of Zn concentration. The existence of this residual normal fluid strongly validates the basic theory of transport in unconventional superconductors. Moreover, the observed universal behavior is in quantitative agreement with calculations for a gap function of d-wave symmetry. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 548788
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 3 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
Similar Records
Anisotropy of Heat Conduction in YBa{sub 2}Cu{sub 3}O{sub 6.9}: A Probe of Chain Superconductivity
Anisotropy of in-plane thermal conductivity in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}
Thermal conductivity in the ab plane of untwinned YBa sub 2 Cu sub 3 O sub 7 minus. delta
Journal Article
·
Fri Feb 28 23:00:00 EST 1997
· Physical Review Letters
·
OSTI ID:524943
Anisotropy of in-plane thermal conductivity in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}
Journal Article
·
Thu Oct 31 23:00:00 EST 1996
· Journal of Low Temperature Physics
·
OSTI ID:457266
Thermal conductivity in the ab plane of untwinned YBa sub 2 Cu sub 3 O sub 7 minus. delta
Journal Article
·
Mon Jun 01 00:00:00 EDT 1992
· Physical Review, B: Condensed Matter; (United States)
·
OSTI ID:7293708