Commensurate Ordering in Tetrathiafulvalene-Tetracyanoquinodimethane
- 29 November 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 37 (22), 1517
- https://doi.org/10.1103/physrevlett.37.1517
Abstract
Is is suggested that the first-order instability in tetrathiafulvalene-tetracyanoquinodimethane [(TTF)-(TCNQ)] at 38 K is related to the fourth-order umklapp coupling which concerns the wave vectors of the star involved in the three-dimensional periodic ordering. Within the anharmonic TCNQ interchain-coupling model, we predict that the configuration of chain deformation changes abruptly at 38 K, provided that this coupling is attractive.Keywords
This publication has 5 references indexed in Scilit:
- Theory of the Structural Phase Transformations in Tetrathiafulvalene-Tetracyanoquinodimethane (TTF-TCNQ)Physical Review Letters, 1976
- Charge density wave Madelung constant in a system of linear chainsPhysics Letters A, 1976
- First order phase transition in the system of two coupled fields with different transition temperaturesPhysics Letters A, 1976
- Neutron-Scattering Study of the 38- and 54-K Phase Transitions in Deuterated Tetrathiafulvalene- Tetracyanoquinodimethane (TTF-TCNQ)Physical Review Letters, 1975
- Pressure investigation of the metal-semiconductor transition in TTF-TCNQJournal de Physique Lettres, 1974