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Spin Wave Dynamics of 2D and 3D Heisenberg Antiferromagnets

Abstract:

The excitations of the 2D Heisenberg antiferromagnet, Rb 2MnF4, were studied using neutron scattering techniques with the MAPS spectrometer at the ISIS facility of Rutherford Appleton Laboratory. Measurements were made of the magnetic excitations over the whole 2D Brillouin zone at 6 temperatures below the ordering temperature of 38 K and 6 temperatures above. It was found that the excitations were well defined if their wave vectors were larger than the inverse correlation length and were ove...

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Publication status:
Published

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
Journal:
ACTA PHYSICA POLONICA A
Volume:
115
Issue:
1
Pages:
19-24
Publication date:
2009-01-01
EISSN:
1898-794X
ISSN:
0587-4246
Source identifiers:
158423
Language:
English
Pubs id:
pubs:158423
UUID:
uuid:b5c3f2c3-5591-449b-ac67-e23db2bd754d
Local pid:
pubs:158423
Deposit date:
2012-12-19

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