Structural properties of strongly correlated quasi-1D organic systems

Correlated quasi-1D electron gas exhibit 2k(F) and 4k(F) CDW/BOW instabilities widely observed among the organic conductors. The Bechgaard and Fabre salts exhibit mixed SDW-CDW, Anti-ferromagnetism (AF) and spin peierls (SP) ground states achieving a subtle coupling between the spin and lattice degrees of freedom. The SP and AF nature of the Fabre salts' ground state is analyzed in relation with the presence of a high temperature 4k(F) CDW-ferroelectric phase transition. (C) 2002 Elsevier Science B.V. All rights reserved.