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 two-electron 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 s-like and p-like 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