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

B. Horovitz; D. Mukamel

doi:10.1016/0038-1098(77)91330-8

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

B. Horovitz
, D. Mukamel

Research output: Contribution to journal › Article › peer-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 q_x= π a + q′_x and q_z of the wave vector associated with the charge density wave satisfy q_zc 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 language	English
Pages (from-to)	285-289
Number of pages	5
Journal	Solid State Communications
Volume	23
Issue number	5
DOIs	https://doi.org/10.1016/0038-1098(77)91330-8
State	Published - 1 Jan 1977
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(77)91330-8

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title = "A model for phase transitions in Tetrathiafulvalene-Tetracyanoquinodimethane (TTF-TCNQ)",

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.",

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T1 - A model for phase transitions in Tetrathiafulvalene-Tetracyanoquinodimethane (TTF-TCNQ)

AU - Horovitz, B.

AU - Mukamel, D.

PY - 1977/1/1

Y1 - 1977/1/1

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/0009439758

U2 - 10.1016/0038-1098(77)91330-8

DO - 10.1016/0038-1098(77)91330-8

M3 - Article

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VL - 23

SP - 285

EP - 289

JO - Solid State Communications

JF - Solid State Communications

IS - 5

ER -

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

Abstract

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