THE EFFECT OF SCREENING ON THE THER1\1AL RESISTIVITY OF METALS

Abstract

A model for calculating electron-electron interaction, compressibility ratio, screening parameter and thermal resistivity of metals was proposed by using an interaction potential. A FOTRAN 90 computer programme was developed based on the model to calculate the properties of metals. The effect of screening on the compressibility ratio, and thermal resistivity of metals was studied. Results obtained revealed that the screened interaction potential in metals is effective within a distance of lA and depends directly on the electron concentration of the metals. The electron electron interaction increases slightly with electron-gas parameter. The compressibility ratio decreases with an increase in the electron gas parameter, also the screening parameter increases with an increase in the electron gas parameter. The thermal resistivity increases with an increase in the electron gas parameter. It also increases with an increase in the screening parameter showing that the screening in metals affects the thermal resistivity of metals. The results obtained in the work revealed that thermal resistivity of metals increase with increase in temperature in agreement with theoretical predictions.