Orbiton–phonon coupling in the localized limit

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Brink van den, Jeroen (2002) Orbiton–phonon coupling in the localized limit. Physica B: Condensed Matter, 312-31 . pp. 743-744. ISSN 0921-4526

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Abstract: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.
Item Type:Article
Copyright:© 2002 Elsevier
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Link to this item:http://purl.utwente.nl/publications/74748
Official URL:http://dx.doi.org/10.1016/S0921-4526(01)01557-5
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Metis ID: 206770