FK-model approach to a coupled chain system: 3rd-order commensurate ionic conductors
Abstract We have studied a coupled chain system with 3rd-order commensurability. The ground state configuration and excitation spectrum are discussed for the coupled chain system and, also for a linear chain system of a generalized FK model. The explicit calculations are applied to K-priderites. The result obtained turns out to be consistent qualitatively with experimental observations for the K-priderites, having the K-ion density ϱ =0.75.