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Presence of soft phonons in a model ferroelectric
Author(s) -
Freidkin E. S.,
Horton G. K.,
Cowley E. R.
Publication year - 1996
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221950207
Subject(s) - soft modes , ferroelectricity , phonon , condensed matter physics , range (aeronautics) , materials science , phase transition , mode (computer interface) , phase (matter) , statistical physics , physics , computer science , optoelectronics , quantum mechanics , composite material , operating system , dielectric
Abstract We investigate the behaviour of a one‐dimensional ferroelectric crystal. The model includes both short‐range and long‐range interactions. We prove that the system undergoes a phase transition from an ordered to a disordered state and confirm the existence of a soft mode for this particular model.