Penn, D.
, Lewis, S.
and Cohen, M.
(1995),
Total-dielectric-function Approach to Electron and Phonon Response in Solids, Physical Review B (Condensed Matter and Materials Physics), [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=620441
(Accessed October 20, 2025)
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Total-dielectric-function Approach to Electron and Phonon Response in Solids
Published
Author(s)
, S Lewis, Marvin Cohen
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
Pub Type
Journals
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Created January 1, 1995, Updated February 19, 2017