Coulomb correlations and optical gap in polyacetylene

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Description

A model including both electron-phonon coupling (as in the SSH Hamiltonian) and electron-electron interactions (on-site term U, nearest-neighbor term V) is treated within the variational scheme of Gutswiller. It is shown that for weak electron-phonon coupling the primary effect is a bond-order wave induced by electronic correlation, whereas the lattice dimerization is a secondary effect. Correspondingly the optical gap is mainly due to electronic correlation.

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Pages: 7

Creation Information

Baeriswyl, D. & Maki, K. January 1, 1986.

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Description

A model including both electron-phonon coupling (as in the SSH Hamiltonian) and electron-electron interactions (on-site term U, nearest-neighbor term V) is treated within the variational scheme of Gutswiller. It is shown that for weak electron-phonon coupling the primary effect is a bond-order wave induced by electronic correlation, whereas the lattice dimerization is a secondary effect. Correspondingly the optical gap is mainly due to electronic correlation.

Physical Description

Pages: 7

Notes

NTIS, PC A02/MFA01.

Source

  • International conference on science and technology of synthetic metals, Kyoto, Japan, 1 Jun 1986

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  • Other: DE86011236
  • Report No.: LA-UR-86-1838
  • Report No.: CONF-8606133-1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5571110
  • Archival Resource Key: ark:/67531/metadc1088023

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • January 1, 1986

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • March 22, 2018, 4:36 p.m.

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Baeriswyl, D. & Maki, K. Coulomb correlations and optical gap in polyacetylene, article, January 1, 1986; United States. (https://digital.library.unt.edu/ark:/67531/metadc1088023/: accessed March 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.