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Spin gaps and magnetic structure of NaxCoO2

Abstract:

We present two experiments that provide information on spin anisotropy and the magnetic structure of NaxCoO2. First, we report low-energy neutron inelastic scattering measurements of the zone-center magnetic excitations in the magnetically ordered phase of Na0.75CoO2. The energy spectra suggest the existence of two gaps, and are very well fitted by a spin-wave model with both in-plane and out-of-plane anisotropy terms. The gap energies decrease with increasing temperature and both gaps are fo...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevB.73.054405

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Condensed Matter Physics
Role:
Author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Condensed Matter Physics
Role:
Author
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Journal:
Phys. Rev. B.
Volume:
73
Issue:
5
Pages:
054405
Publication date:
2005-10-13
DOI:
EISSN:
1550-235X
ISSN:
1098-0121
URN:
uuid:75d06d08-ad0b-4be2-aefb-ff72f380ac74
Source identifiers:
13910
Local pid:
pubs:13910
Language:
English
Keywords:

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