A common origin for the resistivity of Cd2Re2O7, the cuprates, and Sr2RuO4?
Abstract
We propose an explanation for the temperature dependence of the resistivity of Cd2Re2O7, including the regime above the structural phase transition at T=200 oK. The mechanism involved relies on the existence of a strong van Hove singularity close to the Fermi surface, which is evidenced by relevant band structure calculations. The same mechanism has successfully described the T-linear resistivity of the cuprates and Sr2RuO4, and the one-particle scattering rate in the former materials, as corroborated by recent experiments. We describe a few predictions for Cd2Re2O7 and Cd2Os2O7.
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