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 Incoming links: TTF-TCNQ

Gen Shirane 2026-10-20

A physicist who used neutron scattering to investigate lattice dynamics, including the phonon anomaly associated with the Peierls transition in TTF-TCNQ.^[ref]

q = k_{i} - k_{f}

locates the lattice modulation and

ℏ ω = E_{i} - E_{f}

measures the mode energy, so a softened mode can be distinguished from static diffraction alone. Measurements on deuterated TTF-TCNQ between

60

and

300 K

found a growing Kohn anomaly near

2 k_{F}

below about

150 K

as the

54 K

transition was approached.^[ref]

An inelastic neutron scattering measurement of phonon dispersion in deuterated TTF-TCNQ, including the temperature-dependent anomaly near

2 k_{F}

. The abstract specifies the

60

–

300 K

measurement range and the transition at

54 K