Amplitude mode of charge density wave in TTF [ Ni ( dmit ) 2 ] 2 observed by electronic Raman scattering

Amplitude mode of charge density wave in TTF [ Ni ( dmit ) 2 ] 2 observed by electronic Raman scattering

We measured the optical signature of charge density waves (CDWs) in the multiband conductor TTF [ Ni(dmit)2]2 by electronic Raman scattering. At low energies, a hump develops below 60 K. This hump is associated to the amplitude mode of the CDW with an energy around 9 meV. Raman symmetry-resolved mea...

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Veröffentlicht in:Physical review. B 2021-01, Vol.103 (3), p.035139, Article 035139
Hauptverfasser: Revelli Beaumont, M., Gallais, Y., Sacuto, A., Jacob, K., Valade, L., de Caro, D., Faulmann, C., Cazayous, M.
Format: Artikel
Sprache:eng
Schlagworte:
Amplitudes
Charge density waves
Chemical Sciences
Conductors
Coordination chemistry
Nesting
Raman spectra
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Zusammenfassung:We measured the optical signature of charge density waves (CDWs) in the multiband conductor TTF [ Ni(dmit)2]2 by electronic Raman scattering. At low energies, a hump develops below 60 K. This hump is associated to the amplitude mode of the CDW with an energy around 9 meV. Raman symmetry-resolved measurements show that the CDW amplitude mode is anisotropic and that the CDW can be associated to the band nesting of Ni(dmit)2 chains
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.103.035139