4.3 Article

Non-generality of the Kadowaki-Woods ratio in correlated oxides

Journal

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume 74, Issue 4, Pages 1107-1110

Publisher

PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.74.1107

Keywords

Kadowaki-Woods ratio; strongly correlated electrons; resistivity; specific heat

Funding

  1. Engineering and Physical Sciences Research Council [EP/C511778/1] Funding Source: researchfish

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An explicit expression for the Kadowaki-Woods ratio in correlated metals is derived by invoking saturation of the (high-frequency) Fermi-liquid scattering rate at the Mott-Ioffe-Regel limit. Significant deviations observed in a number of oxides are quantitatively explained due to variations in carrier density, dimensionality, unit cell volume and the number of individual sheets in the Brillouin zone. A generic re-scaling of the original Kadowaki-Woods plot is also presented.

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