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Light Scattering near Displacive Phase Transitions Close in Temperature
Author(s) -
Dos Reis F. G.,
Luzzi R.
Publication year - 1974
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.2220640104
Subject(s) - condensed matter physics , phase transition , light scattering , physics , scattering , lattice (music) , lattice vibration , inelastic scattering , phase (matter) , field (mathematics) , quantum mechanics , phonon , mathematics , pure mathematics , acoustics
A discussion of inelastic light scattering by lattice vibrations associated with unstable modes responsible for the occurrence of displacive phase transitions in solids is presented. An extension of Landau's average field theory of phase transitions, as proposed by Levanyuk and Sannikov, is used to derive the temperature dependence of the eigenfrequencies and of the scattered light intensities.