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Spin waves and revised crystal structure of honeycomb iridate Na2IrO3.

Abstract:

We report inelastic neutron scattering measurements on Na2IrO3, a candidate for the Kitaev spin model on the honeycomb lattice. We observe spin-wave excitations below 5 meV with a dispersion that can be accounted for by including substantial further-neighbor exchanges that stabilize zigzag magnetic order. The onset of long-range magnetic order below T(N)=15.3  K is confirmed via the observation of oscillations in zero-field muon-spin rotation experiments. Combining single-crystal diffraction ...

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Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Condensed Matter Physics
Kolmogorov, AN More by this author
Lancaster, T More by this author
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Journal:
Physical review letters
Volume:
108
Issue:
12
Pages:
127204
Publication date:
2012-03-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:16c7dc16-802e-4f14-af79-558d40e2b218
Source identifiers:
254318
Local pid:
pubs:254318
Language:
English
Keywords:

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