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cond-mat.mtrl-sci2000
Collective modes in uniaxial incommensurate-commensurate systems with the real order parameter
V. Dananic, A. Bjelis, M. Latkovic
The basic Landau model for uniaxial systems of the II class is nonintegrable, and allows for various stable and metastable periodic configurations, beside that representing the uni…
cond-mat.mtrl-sci2000
Acoustic collective excitations and static dielectric response in incommensurate crystals with real order parameter
V. Dananic, A. Bjelis, M. Latkovic
Starting from the basic Landau model for the incommensurate-commensurate materials of the class II, we derive the spectrum of collective modes for all (meta)stable states from the…
cond-mat.mtrl-sci2000★ 1 cited
Landau Model for Commensurate-Commensurate Phase Transitions in Uniaxial Improper Ferroelectric Crystals
M. Latkovic, A. Bjelis, V. Dananic
We propose the Landau model for lock-in phase transitions in uniaxially modulated improper ferroelectric incommensurate-commensurate systems of class I. It includes Umklapp terms o…