Fermi surface effect on intrinsic Lorenz number of Fermi liquids |
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Authors: | Takuya Okabe |
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Institution: | Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan |
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Abstract: | We investigate a Fermi surface effect on the ideal Lorenz ratio of an anisotropic Fermi liquid caused by the onset of Umklapp scatterings. After discussing simple models by way of illustration, we present numerical results for transition metals, and indicate a material with a simple Fermi surface like sodium cobaltite as a possible candidate to observe the effect. |
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Keywords: | Lorenz number Fermi liquid Umklapp process Electron correlation Quasiparticle transport |
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