Calculated phonon spectra of paramagnetic iron at the alpha-gamma phase   transition
  We compute lattice dynamical properties of iron at the bcc-fcc phase transition using dynamical mean-field theory implemented with the frozen-phonon method. Electronic correlations are found to have a strong effect on the lattice stability of paramagnetic iron in the bcc phase. Our results for the structural phase stability and lattice dynamical properties of iron are in good agreement with experiment. 
I. Leonov, A. I. Poteryaev, V. I. Anisimov, D. Vollhardt
cond-mat.mtrl-sci