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arXiv · 0706.3345

Orbital and Spin Excitations in Cobalt Oxide

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

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Z. Yamani, W. J. L. Buyers, R. A. Cowley, D. Prabhakaran. 2007-06-22. Orbital and Spin Excitations in Cobalt Oxide. https://doi.org/10.1016/j.physb.2007.10.306

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