
Accession Number : AD0751670
Title : Dynamic Effective Charge of a Finite Linear Chain.
Descriptive Note : Technical rept.,
Corporate Author : CALIFORNIA UNIV IRVINE DEPT OF PHYSICS
Personal Author(s) : Cunningham,Stephen L. ; Maradudin,A. A.
Report Date : NOV 1972
Pagination or Media Count : 32
Abstract : A formalism for calculating the dynamic effective charge induced on the atoms of a homopolar crystal by the presence of a surface is presented in the framework of the tight binding approximation. The method is applied to a one dimensional chain of twoelectron atoms for the purposes of illustration and identification of the critical model parameters. The wave function of the chain is constructed from a linear combination of slike and plike atomic orbitals. It was found that the important model parameters are the energy band gap and the hopping integral between s and p states centered on adjacent sites. The dependence of the dynamic effective charge on these two parameters is presented. (Author)
Descriptors : (*CRYSTAL LATTICES, *MOLECULAR ORBITALS), (*SURFACES, CRYSTAL LATTICES), DIPOLE MOMENTS, WAVE FUNCTIONS, BAND THEORY OF SOLIDS, MATHEMATICAL ANALYSIS
Subject Categories : Atomic and Molecular Physics and Spectroscopy
Solid State Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE