New aspects of nonlinear conductivity in organic charge-transfer salts

A theta- phase organic charge- transfer salt shows giant nonlinear conductivity and works like a two- terminal electronic device to generate alternating current; this is called an organic thyristor. The nonlinear conductivity is ascribed to the melting of competing charge order patterns, where the so- called three- fold pattern is characteristic of the nearly triangular theta- phase lattice. Nonlinear conductivity is being found in many other organic charge- transfer salts.