The role of electronic correlations on the phonon modes of MnO and NiO

Details The role of electronic correlations on the phonon modes of MnO and NiO The role of electronic correlations on the phonon modes of MnO and NiO

2003-08-10

arxiv.org/abs/cond-mat/0308188v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.68.140406

The possibility of magnetic-order induced phonon anisotropy in single crystals of MnO and NiO is investigated using inelastic neutron scattering. Below Tn both compounds exhibit a splitting in their transverse optical phonon spectra of approximately 10%. This behavior illustrates that, contrary to general assumption, the dynamic properties of MnO and NiO are substantially non-cubic.

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