Author/Authors :
March, Norman H. Donostia International Physics Center, Spain , March, Norman H. University of Antwerp - Department of Physics, Belgium , March, Norman H. Oxford University, England , Rubio, Angel Universidad del Pais Vasco - Facultad de Ciencias Quimicas, Centro Mixto UPV-CSIC - Departamento de Fisica de Materiales, Spain , Rubio, Angel European Theoretical Spectroscopy Facility (ETSF), Spain , Rubio, Angel Donostia International Physics Center, Spain
Abstract :
By combining a recent result of March and Matthai for the energy gap G with a model of Rey and Savin, the correlation energy ec of the valence electrons embracing C, Si, Ge and Sn can be estimated. While Sn is thereby predicted to have ec near to the Ceperley-Alder jellium result corresponding to G = 0, diamond exhibits a dramatic reduction in correlation energy due to its large band-gap.
