A model for phase transitions in Tetrathiafulvalene-Tetracyanoquinodimethane (TTF-TCNQ)

B. Horovitz, D. Mukamel

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The observed phase transitions in Tetrathiafulvalene-Tetracyanoquinodimethane (TTF-TCNQ) are discussed using a simple model for the interchain coupling of charge density waves. Estimates based on Coulomb energies show that for 38 K < T < 49 K the components qx= π a + q′x and qz of the wave vector associated with the charge density wave satisfy qzc q′xa≅0.1, with q′xa∼(T2 - T) 1 2 and T2 = 49 K. A possible mechanism for the first order transition at 38 K is proposed. The results are compared with neutron and X-ray scattering and with isotope shifts of the transition temperatures.

Original languageEnglish
Pages (from-to)285-289
Number of pages5
JournalSolid State Communications
Volume23
Issue number5
DOIs
StatePublished - 1 Jan 1977
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry

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