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Zeitschrift für Physik B Condensed Matter

, Volume 104, Issue 3, pp 379–386 | Cite as

Temperature dependence of transport coefficients in liquid and amorphous metals

  • Ulrich WernerEmail author
  • Raymond Frésard
Article

Abstract

We apply the muffin-tin effective medium approximation to calculate the temperature dependence of the resistivity and 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 one-particle spectrum due to strong scattering at the quasi zone boundary and which tends to close under an increase in temperature. In turn the thermopower is found to have non-trivial density and temperature dependences.

PACS

71.23 71.55 72.15 

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Copyright information

© Springer-Verlag 1997

Authors and Affiliations

  1. 1.Institut für Theorie der Kondensierten Materie, PhysikhochhausUniversität KarlsruheKarlsruheGermany
  2. 2.Institut de PhysiqueUniversité de NeuchâtelNeuchâtelSwitzerland

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