Temperature Dependence of Transport Coefficients in Liquid and Amorphous Metals

Details Temperature Dependence of Transport Coefficients in Liquid and Amorphous Metals Temperature Dependence of Transport Coefficients in Liquid and Amorphous Metals

1996-05-15

arxiv.org/abs/cond-mat/9605089v1

Z. Phys. B,104 (1997) 379

Physics

Condensed Matter

9 pages, 9 Postscript figures

Scientific paper

10.1007/s002570050464

We apply the muffin-tin effective medium approximation to calculate the temperature dependence of the resistivity and of the thermopower of amorphous and liquid metals. The results show unambiguously that a large resistivity is accompanied by a negative temperature coefficient, in agreement with the experimental situation. This behavior is shown to result from a pseudo-gap which opens in the 1-particle spectrum due to strong scattering at the quasi zone boundary. In turn the thermopower is found to have non-trivial density and temperature dependences.

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