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Publication Citation: Total-dielectric-function Approach to Electron and Phonon Response in Solids

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Author(s): David R. Penn; S Lewis; Marvin Cohen;
Title: Total-dielectric-function Approach to Electron and Phonon Response in Solids
Published: January 01, 1995
Abstract: The interaction between two test charges, the response of a solid to an external field, and the normal modes of the solid can be determined from a total dielectric function that includes both electronic and lattice polarizabilities as well as local-field effects. In this paper we examine the relationship between superconductivity and the stability of a solid and derive sum rules for the electronic part of the dielectric function. It is also shown that there are negative eigenvalues of the total static dielectric function, implying the possibility of an attractive interaction between test charges. An attractive interaction is required for superconductivity.
Citation: Physical Review B (Condensed Matter and Materials Physics)
Volume: 51
Issue: 10
Pages: pp. 6500 - 6514
Research Areas: Condensed Matter Physics
PDF version: PDF Document Click here to retrieve PDF version of paper (2MB)