Amplitude mode of charge density wave in TTF [ Ni ( dmit ) 2 ] 2 observed by electronic Raman scattering - Archive ouverte HAL Access content directly
Journal Articles Physical Review B Year : 2021

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

Abstract

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.
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Dates and versions

hal-03229054 , version 1 (13-10-2021)

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M. Revelli Beaumont, Y. Gallais, A. Sacuto, K. Jacob, Lydie Valade, et al.. Amplitude mode of charge density wave in TTF [ Ni ( dmit ) 2 ] 2 observed by electronic Raman scattering. Physical Review B, 2021, 103 (3), ⟨10.1103/PhysRevB.103.035139⟩. ⟨hal-03229054⟩
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