Comment on “Electronic thermal conductivity and the Wiedemann-Franz law for unconventional superconductors”
M. Houssa, M. Ausloos
DOI 10.1103/PhysRevB.56.953 · Physical Review B
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Abstract
A different treatment of the electronic contribution to the in-plane thermal conductivity of high-Tc superconductors than in Graf et al. [Phys. Rev. B 53, 15 147 (1996)] leads to a nonconventional T2 dependence of the electron-impurity contribution in contrast to the predicted linear dependence of Graf et al. In fact, taking into account both electron-impurity-phonon scattering leads to a nontrivial Tβ dependence as found experimentally in various high-Tc materials, where β results from different T-dependent contributions as well as the values of the impurity fraction in the sample N and the in-plane transport electron-phonon coupling constant of the material λab.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La2-xSrxCaCu2O4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Tl2Ba2Ca2Cu3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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