Charge-Density-Wave like Behavior in the One-Dimensional Charge-Ordered   Semiconductor (NbSe4)3I
  We report on broadband dielectric spectroscopy on the one-dimensional semiconductor (NbSe4)3I. Below the structural phase transition close to 270 K we observe colossal dielectric constants with a frequency and temperature dependence very similar to what is observed in canonical charge-density wave systems. Guided by structural details we interpret this structural phase transition as driven by complex charge-order processes. 
D. Staresinic, P. Lunkenheimer, J. Hemberger, K. Biljakovic, and A.   Loidl