Dielectric response of charge induced correlated state in the   quasi-one-dimensional conductor (TMTTF)2PF6
  Conductivity and permittivity of the quasi-one-dimensionsional organic transfer salt (TMTTF)2PF6 have been measured at low frequencies (10^3-10^7 Hz) between room temperature down to below the temperature of transition into the spin-Peierls state. We interpret the huge real part of the dielectric permittivity (up to 10^6) in the localized state as the realization in this compound of a charge ordered state of Wigner crystal type due to long range Coulomb interaction. 
F.Nad (1,2), P.Monceau (1), C. Carcel (3) and J.M. Fabre (3) ((1)   CRTBT-CNRS Grenoble, (2) IREE Moscow, (3) Chimie Organiq...