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).
KeywordsThermal Hysteresis Ultrasonic Attenuation Incommensurate Phase Lattice Periodicity Soliton Lattice
Unable to display preview. Download preview PDF.
- 1.W.L. McMillan: Phys. Rev. B 14, 1496 (1976).Google Scholar