Electron-ion interaction in a nearly ferroelectric metal

Joel I. Gersten; Meir Weger

doi:10.1103/PhysRevB.65.214530

Electron-ion interaction in a nearly ferroelectric metal

Joel I. Gersten
, Meir Weger

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We calculate the electron-ion potential for a thin metallic layer (in the a-b plane) sandwiched between two semi-infinite dielectrics. The dielectric constant of the dielectrics varies strongly in the a-b plane. We show that there is an overscreening effect, and the electron-ion interaction is strongly enhanced, for certain values of the parameters. This suggests the possibility of a greatly enhanced electron-phonon coupling in a nearly ferroelectric metal, such as the high-T_c perovskites.

Original language	English
Article number	214530
Pages (from-to)	2145301-21453011
Number of pages	19307711
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.65.214530
State	Published - 1 Jun 2002

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10.1103/PhysRevB.65.214530

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AB - We calculate the electron-ion potential for a thin metallic layer (in the a-b plane) sandwiched between two semi-infinite dielectrics. The dielectric constant of the dielectrics varies strongly in the a-b plane. We show that there is an overscreening effect, and the electron-ion interaction is strongly enhanced, for certain values of the parameters. This suggests the possibility of a greatly enhanced electron-phonon coupling in a nearly ferroelectric metal, such as the high-Tc perovskites.

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Electron-ion interaction in a nearly ferroelectric metal

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