Premium
Thick Films near Phase Transitions. Green Functions, Fluctuation Spectra, and Light Scattering Theory
Author(s) -
Filho A. Ribeiro,
Tilley D. R.
Publication year - 1984
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.2221250103
Subject(s) - physics , spectral line , scattering , light scattering , phenomenological model , phase (matter) , function (biology) , inelastic scattering , boundary value problem , condensed matter physics , mathematical analysis , optics , quantum mechanics , mathematics , evolutionary biology , biology
A film of thickness L with a one‐component order parameter η is considered. It is assumed that the free energy is given by a simple Landau‐type expansion in η, that the boundary condition is linear in η and ▽η, and that fluctuations in the dielectric function depend linearly on fluctuations in η. With the use of phenomenological equations of motion the order‐parameter Green function is derived. Expressions are given, and illustrated numerically, for the power spectrum of order‐parameter fluctuations and the cross section for inelastic light scattering.