A CALCULATION OF THE PHONON FREQUENCIES IN SODIUM.
Abstract
The phonon spectrum of sodium is calculated in the harmonic approximation. The effective interaction between the ions is separated into direct two-body forces between bare ions and effective attraction due to the presence of conduction electrons. Careful treatment of the two phonon processes includes the calculation of the electron-phonon scattering based on the pseudo-potential method and the screening effects due to the interaction between electrons by the Hartree-Fock approximation with a screened exchange potential. Comparison of the results for sodium with neutron diffraction measurements and a previous calculation by Toya shows good agreement on the whole. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 09, 1964
- Accession Number
- AD0601879
Entities
People
- Lu Jeu Sham
Organizations
- University of California, San Diego