Dynamic Effective Charge of a Finite Linear Chain.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1972
- Accession Number
- AD0751670
Entities
People
- A. A. Maradudin
- Stephen L. Cunningham
Organizations
- University of California, Irvine