| Author(s): |
P Allen; Marvin Cohen; David R. Penn; |
| Title: |
Total Dielectric Function: Algebraic Sign, Electron-Lattice Response, and Superconductivity |
| Published: |
August 01, 1988 |
| Abstract: |
The interaction between two test charges in a solid can be described in terms of a total dielectric function that includes electronic and lattice polarization. Crystal stability requires the eigenvalues of ε-1 to be <= 1. Some implications for superconductivity are discussed. A total dielectric function for the electron-lattice system is derived in the mean-field approximation and its inverse is explicitly constructed. The low-lying poles of ε-1 give the correct phonon frequencies as determined by the usual dynamical matrix. |
| Citation: |
Physical Review B (Condensed Matter and Materials Physics) |
| Volume: |
38 |
| Issue: |
4 |
| Pages: |
pp. 2513 - 2525 |
| Research Areas: |
Condensed Matter Physics |
