Phase Soliton Effect on ESR Line Shape in the Incommensurate Phase of K₂SeO₄ Crystal

Abstract

ESR line shape of VO²⁺ ions has been studied in the incommensurate phase of K₂SeO₄ crystal. The line shapes near the commensurate-incommensurate transition were analysed by the one-dimensional phase soliton model. The theoretical line shape agreed well with the experimental one. The temperature dependences of the density and the initial phase of the soliton were obtained from the line shape fitting.