%0 Journal Article
%T Terahertz spectroscopy of the crystalline alpha-quaterthiophene: A combined experimental and density functional theory study
%+ Laboratoire des colloïdes, verres et nanomatériaux (LCVN)
%A Hermet, Patrick
%A Bantignies, Jean-Louis
%A Maurin, David
%A Sauvajol, Jean-Louis
%< avec comité de lecture
%Z LCVN:07-173
%@ 0009-2614
%J Chemical Physics Letters
%I Elsevier
%V 445
%N 1-3
%P 47-50
%8 2007
%D 2007
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles
%X We have investigated the experimental terahertz phonon modes in a model oligothiophene, the alpha-quaterthiophene (LT phase), by using infrared and inelastic neutron scattering spectroscopy in the 10-50 cm(-1) (0.3-1.5 THz) domain. The ability of density functional theory to reproduce the terahertz infrared phonon modes is also reported. In agreement with the calculation, the experimental infrared spectrum at 10 K is dominated by two phonon modes centered at 32 and 46 cm-(1) respectively assigned to an antiphasis translation mode and a libration of rings. (C) 2007 Published by Elsevier B.V.
%G English
%L hal-00496380
%U https://hal.science/hal-00496380
%~ CNRS
%~ UNIV-MONTP2
%~ LCVN
%~ UNIV-MONTPELLIER
%~ UM1-UM2
%~ TEST3-HALCNRS