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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

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
Journal:
Phys. Rev. B. More from this journal
Volume:
73
Issue:
5
Pages:
054405
Publication date:
2005-10-13
DOI:
EISSN:
1550-235X
ISSN:
1098-0121
Language:
English
Keywords:
Pubs id:
pubs:13910
UUID:
uuid:75d06d08-ad0b-4be2-aefb-ff72f380ac74
Local pid:
pubs:13910
Source identifiers:
13910
Deposit date:
2012-12-19

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