Neutron Inelastic Scattering Study of Tetrathiafulvalene Tetracyanoquinodimethane (TTF-TCNQ)

Abstract
Neutron inelastic scattering techniques have been used to measure the phonon dispersion curves along the chain direction in TTF-TCNQ. Most of the branches are rather flat and probably stem from excitations within the TTF or TCNQ molecules. Longitudinal and transverse acoustic modes were also measured and a large Kohn anomaly that seems to stem from the longitudinal branch was observed at 0.295 (2πb).