Phason Instability in Tetrathiafulvalene-Tetracyanoquinodimethane (TTF-TCNQ)
- 18 October 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 37 (16) , 1071-1074
- https://doi.org/10.1103/physrevlett.37.1071
Abstract
The 49-K phase transition in tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ) is interpreted in terms of a phason instability of the charge-density-wave ground state. The order parameter couples linearly to an external strain, and the phase transition can be suppressed by clamping the crystal. Recent neutron scattering experiments show indications of this effect. Renormalization-group calculations yield pure classical critical behavior at this phase transition, and exponents for the 54-K transition.
Keywords
This publication has 8 references indexed in Scilit:
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