Lattice effect of strong electron correlation: Implication for ferroelectricity and superconductivity

T. Egami, S. Ishihara, M. Tachiki

Research output: Contribution to journalArticle

145 Citations (Scopus)

Abstract

Much theoretical work has been devoted to understanding the role of strong electron correlations in high-temperature superconductivity mainly through magnetic interactions, but the possible role of electron correlation in ferroelectricity of metal oxides has not received attention. Diagonalization of a simple many-body, tight-binding Hamiltonian shows that the electron-lattice interaction is dramatically enhanced in some cases by strong electron correlation because of deformation-induced charge transfer. This effect may be closely related to ferroelectricity and superconductivity in transition metal oxides.

Original languageEnglish
Pages (from-to)1307-1310
Number of pages4
JournalScience
Volume261
Issue number5126
DOIs
Publication statusPublished - 1993 Jan 1

ASJC Scopus subject areas

  • General

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