The ferroelectric Mott-Hubbard phase of organic (TMTTF)2X conductors
  We present experimental evidences for a ferro-electric transition in the family of quasi one- dimensional conductors (TMTTF)2X. We interpret this new transition in the frame of the combined Mott-Hubbard state taking into account the double action of the spontaneous charge disproportionation on the TMTTF molecular stacks and of the X anionic potentials. 
P. Monceau, F.Ya. Nad and S. Brazovskii