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Spin dynamics of frustrated easy-axis triangular antiferromagnet 2H-AgNiO2 explored by inelastic neutron scattering

Abstract:

We report inelastic neutron scattering measurements of the spin dynamics in the layered hexagonal magnet 2H-AgNiO2 which has stacked triangular layers of antiferromagnetically-coupled Ni2+ spins (S=1) ordered in a collinear alternating stripe pattern. We observe a broad band of magnetic excitations above a small gap of 1.8 meV and extending up to 7.5 meV, indicating strongly dispersive excitations. The measured dispersions of the boundaries of the powder-averaged spectrum can be quantitativel...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevB.79.104421

Authors


Wheeler, EM More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Condensed Matter Physics
Wawrzynska, E More by this author
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Journal:
Phys. Rev. B v
Volume:
79
Issue:
10
Pages:
104421
Publication date:
2009-02-04
DOI:
EISSN:
1550-235X
ISSN:
1098-0121
URN:
uuid:664c36b0-e5a2-4b13-81c8-178933d7e111
Source identifiers:
66817
Local pid:
pubs:66817
Language:
English
Keywords:

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