Abstract
Frequency versus wave-vector dispersion relations along the three principal symmetry directions viz. ||, |ζζ0| and |ζζζ| have been computed for the alkali metals potassium, rubidium and lithium by a model developed by the present authors by combining ion-ion interaction of an axially symmetric model with electron-ion interaction from the Krebs model. The theoretical results have almost reproduced the experimental ones within the limits of the experimental errors.
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