Metal-insulator transitions and electron-phonon interactions in organic conductors

Kim Chau Ung; S. Mazumdar; D. K. Campbell; H. Q. Lin

doi:10.1016/0379-6779(93)90799-3

Metal-insulator transitions and electron-phonon interactions in organic conductors

Kim Chau Ung, S. Mazumdar, D. K. Campbell, H. Q. Lin

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

Abstract

Commensurate 1/4 and 1/3-filled bands in which the electrons are coupled to both intersite phonons and intramolecular vibrations are investigated. Unlike in the 1/2-filled band, the bond order wave and the charge density wave coxexist and interact cooperatively for all values of the two electron-phonon coupling constants. In spite of the coexistence of the two kinds of density waves, solitons have charges that are rational fractions. The relevance of the cooperative interaction in non-half-filled bands to the metal-insulator transitions in segregated stack charge-transfer solids is discussed.

Original language	English (US)
Pages (from-to)	4660-4665
Number of pages	6
Journal	Synthetic Metals
Volume	57
Issue number	2-3
DOIs	https://doi.org/10.1016/0379-6779(93)90799-3
State	Published - Apr 19 1993

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/0379-6779(93)90799-3

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AU - Ung, Kim Chau

AU - Mazumdar, S.

AU - Campbell, D. K.

AU - Lin, H. Q.

PY - 1993/4/19

Y1 - 1993/4/19

N2 - Commensurate 1/4 and 1/3-filled bands in which the electrons are coupled to both intersite phonons and intramolecular vibrations are investigated. Unlike in the 1/2-filled band, the bond order wave and the charge density wave coxexist and interact cooperatively for all values of the two electron-phonon coupling constants. In spite of the coexistence of the two kinds of density waves, solitons have charges that are rational fractions. The relevance of the cooperative interaction in non-half-filled bands to the metal-insulator transitions in segregated stack charge-transfer solids is discussed.

AB - Commensurate 1/4 and 1/3-filled bands in which the electrons are coupled to both intersite phonons and intramolecular vibrations are investigated. Unlike in the 1/2-filled band, the bond order wave and the charge density wave coxexist and interact cooperatively for all values of the two electron-phonon coupling constants. In spite of the coexistence of the two kinds of density waves, solitons have charges that are rational fractions. The relevance of the cooperative interaction in non-half-filled bands to the metal-insulator transitions in segregated stack charge-transfer solids is discussed.

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Metal-insulator transitions and electron-phonon interactions in organic conductors

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