Orbiton-phonon coupling in the localized limit

J. van den Brink

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In systems with orbital order there is an elementary excitation, orbiton, due to the breaking of orbital symmetry. It is shown that there is both a correlation and dynamical lattice contribution to the orbital excitation, which makes the orbiton an intrinsically mixed mode. A localized model calculation shows that in the phonon excitation spectrum weak satellites appear at the orbiton energy, in qualitative agreement with Raman experiments on LaMnO3.
Original languageUndefined
Pages (from-to)743-744
Number of pages2
JournalPhysica B
Publication statusPublished - 2002


  • Raman scattering
  • Orbiton
  • METIS-206770
  • IR-74748
  • Manganites
  • Orbital excitation

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