Phonon-Soliton Interaction in K2SeO4
An incommensurate phase is characterized by an order parameter that is modulated with a wavelength incommensurate with the lattice periodicity. Close to the transition temperature Ti this modulation is sinusoidal (plane-wave regime); the corresponding elementary excitations are fluctuations in amplitude and phase of the ordering coordinate (amplitons and phasons).
KeywordsAttenuation Soliton Selenate Acoustics K2SeO4
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