Author(s)

Silvia Andronic, Anatolie Casian

Department of Computers, Informatics and Microelectronics, Technical University of Moldova,Chisinau, Moldova.

The Peierls structural transition in quasi-one-dimensional organic crystals of TTF-TCNQ is investigated in the frame of a more complete physical model. The two most important electron-phonon interaction mechanisms are taken into account simultaneously. One is similar of that of deformation potential and the other is of polaron type. For simplicity, the 2D crystal model is considered. The renormalized phonon spectrum and the phonon polarization operator are calculated in the random phase approximation for different temperatures. The effects of interchain interaction on renormalized acoustic phonons and on the Peierls critical temperature are analyzed.

Quasi-One-Dimensional Organic Crystals, TTF-TCNQ, Peierls Transition, Interchain Interaction, Renormalized Phonons

Andronic, S. and Casian, A. (2016) Phonons near Peierls Structural Transition in Quasi-One-Dimensional Organic Crystals of TTF-TCNQ. Advances in Materials Physics and Chemistry, 6, 98-104. doi: 10.4236/ampc.2016.64010.