Document Type

Article

Publication Date

6-24-2009

Abstract

We investigated the low-energy excitations in CoO in the μeV range by a back-scattering-neutron spectrometer. The energy scans on a CoO single crystal revealed inelastic peaks at E=2.05±0.02μeV at T=3.5 K on both energy-gain and energy-loss sides. The inelastic peaks move gradually toward lower energy with increasing temperature and finally merge with the elastic peak at the electronic magnetic ordering temperature TN 290. We interpret the inelastic peaks to be due to the transition between hyperfine-split nuclear level of the C 59 o isotopes with spin I=7/2. © 2009 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review B - Condensed Matter and Materials Physics

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