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

M. Revelli Beaumont; Y. Gallais; A. Sacuto; K. Jacob; L. Valade; D. de Caro; C. Faulmann; M. Cazayous

doi:10.1103/PhysRevB.103.035139

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

Strongly Correlated Electrons 2021-01-26 v1

Authors: M. Revelli Beaumont , Y. Gallais , A. Sacuto , K. Jacob , L. Valade , D. de Caro , C. Faulmann , M. Cazayous

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Abstract

We measured the optical signature of the 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.

Keywords

charge density wave amplitude mode electronic Raman scattering TTF[Ni(dmit)2]2 band nesting anisotropy

Cite

@article{arxiv.2101.09455,
  title  = {Amplitude mode of charge density wave in TTF[Ni(dmit)2]2 observed by electronic Raman scattering},
  author = {M. Revelli Beaumont and Y. Gallais and A. Sacuto and K. Jacob and L. Valade and D. de Caro and C. Faulmann and M. Cazayous},
  journal= {arXiv preprint arXiv:2101.09455},
  year   = {2021}
}

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