First-order CIC transition induced by Coulomb forces

It is shown that the long range Coulomb interaction between charged solitons is attractive. The transition from the commensurate to the incommensurate state occurs therefore at finite soliton density. Such transition is of the first order. The relevance of those results to real materials is briefly discussed Demonstration d'une interaction coulombienne attractive entre solitons charges, ce qui entraine une transformation commensurable→incommensurable du 1er ordre pour une densite de solitons finie