Thermal conductivity of an untwinned YBa2Cu3O7−δ single crystal and a new interpretation of the superconducting state thermal transport
R. C. Yu, M. B. Salamon, Jian Ping Lu, W. C. Lee
DOI 10.1103/PhysRevLett.69.1431 · Physical Review Letters
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Abstract
We have measured the anisotropic thermal conductivity of an untwinned single crystal of YBa2Cu3O7−δ in the most conducting a-b plane from 14 to 200 K. Unlike previous analyses, ours attributes the observed rapid rise in thermal conductivity in the superconducting state to the electronic contribution of the Cu-O plane. We propose that strong suppression of the quasiparticle scattering rate with decreasing temperature is responsible for the large enhancement of the superconducting-state thermal conductivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90.5 | Pressure not reported | onset |
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