Orbital and Spin Excitations in Cobalt Oxide

Z. Yamani; W. J. L. Buyers; R. A. Cowley; D. Prabhakaran

doi:10.1016/j.physb.2007.10.306

Orbital and Spin Excitations in Cobalt Oxide

Strongly Correlated Electrons 2009-11-13 v1

Authors: Z. Yamani , W. J. L. Buyers , R. A. Cowley , D. Prabhakaran

Journal reference: Physica B 403 (2008) p. 1406

Comments: To be published in Physica B (Proceedings of SCES07 conference in Houston)

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Abstract

By means of neutron scattering we have determined new branches of magnetic excitations in orbitally active CoO (TN=290 K) up to 15 THz and for temperatures from 6 K to 450 K. Data were taken in the (111) direction in six single-crystal zones. From the dependence on temperature and Q we have identified several branches of magnetic excitation. We describe a model for the coupled orbital and spin states of Co2+ subject to a crystal field and tetragonal distortion.

Keywords

magnetic materials and spin systems spin excitations in condensed matter frustrated magnetism

Cite

@article{arxiv.0706.3345,
  title  = {Orbital and Spin Excitations in Cobalt Oxide},
  author = {Z. Yamani and W. J. L. Buyers and R. A. Cowley and D. Prabhakaran},
  journal= {arXiv preprint arXiv:0706.3345},
  year   = {2009}
}

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