Metal-insulator and insulator-insulator transitions in the quarter-filled band organic conductors

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Abstract

The theory of the 2kF and 4kF instabilities in quarter-filled band organic conductors is revisited. The phase angles of the 2kF bond and charge density waves change as electron correlation is turned on, and this switching of the phase angle is critical for understanding the bond distortion patterns in the real materials. Intersite Coulomb interactions in the real materials must be nonzero but less than a critical value. Both intersite and intrasite charge density waves are destabilized in the quasi-two-dimensional regime for realistic parameters, explaining the weakening of these phases in the superconducting materials.

Original languageEnglish (US)
Pages (from-to)2603-2606
Number of pages4
JournalPhysical Review Letters
Volume73
Issue number19
DOIs
StatePublished - 1994

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phase shift
conductors
insulators
metals
electrons
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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abstract = "The theory of the 2kF and 4kF instabilities in quarter-filled band organic conductors is revisited. The phase angles of the 2kF bond and charge density waves change as electron correlation is turned on, and this switching of the phase angle is critical for understanding the bond distortion patterns in the real materials. Intersite Coulomb interactions in the real materials must be nonzero but less than a critical value. Both intersite and intrasite charge density waves are destabilized in the quasi-two-dimensional regime for realistic parameters, explaining the weakening of these phases in the superconducting materials.",
author = "Ung, {K. C.} and Sumitendra Mazumdar and Toussaint, {William D}",
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AU - Toussaint, William D

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N2 - The theory of the 2kF and 4kF instabilities in quarter-filled band organic conductors is revisited. The phase angles of the 2kF bond and charge density waves change as electron correlation is turned on, and this switching of the phase angle is critical for understanding the bond distortion patterns in the real materials. Intersite Coulomb interactions in the real materials must be nonzero but less than a critical value. Both intersite and intrasite charge density waves are destabilized in the quasi-two-dimensional regime for realistic parameters, explaining the weakening of these phases in the superconducting materials.

AB - The theory of the 2kF and 4kF instabilities in quarter-filled band organic conductors is revisited. The phase angles of the 2kF bond and charge density waves change as electron correlation is turned on, and this switching of the phase angle is critical for understanding the bond distortion patterns in the real materials. Intersite Coulomb interactions in the real materials must be nonzero but less than a critical value. Both intersite and intrasite charge density waves are destabilized in the quasi-two-dimensional regime for realistic parameters, explaining the weakening of these phases in the superconducting materials.

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