Influence of Van Hove singularities on the thermal conductivity of high-Tc superconductors
M. Houssa, M. Ausloos, K. Durczewski
DOI 10.1103/PhysRevB.54.6126 · Physical Review B
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Abstract
We calculate the electronic contribution κe to the thermal conductivity of a two-dimensional dx2−y2-wave superconductor presenting logarithmic Van Hove singularities (VHS) in the density of states. The influence of the position of these VHS from the Fermi level on the thermal conductivity peak observed below Tc is investigated. Experimental results on different YBa2Cu3O7−x compounds with various oxygen stoichiometry x can be well described by this model with reasonable values of the physical parameters.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | unknown |
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