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Magnetism in geometrically frustrated YMnO3 under hydrostatic pressure studied with muon spin relaxation

Abstract:
The ferroelectromagnet YMnO3 consists of weakly coupled triangular layers of S-2 spins. Below TN ≈ 70 K muon-spin relaxation data show two oscillatory relaxing signals due to magnetic order, with no purely relaxing signals resolvable (which would require different coexisting spin distributions). The transition temperature TN increases with applied hydrostatic pressure, even though the ordered moment decreases. These results suggest that pressure increases both the exchange coupling between the layers and the frustration within the layers.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevLett.98.197203

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
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Author
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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
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Author
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Institution:
"Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institut, Villigen, Switzerland"
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Institution:
Laboratory for Neutron Scattering, ETHZ and Paul Scherrer Institut, Villigen, Switzerland
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Author
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Institution:
Laboratory for Neutron Scattering, ETHZ and Paul Scherrer Institut, Villigen, Switzerland
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Engineering and Physical Sciences Research Council More from this funder
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review Letters Journal website
Volume:
98
Issue:
19
Pages:
197203
Publication date:
2007-05-01
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Language:
English
Keywords:
Subjects:
UUID:
uuid:c3260464-5fca-4ace-a3b2-9c7d2d34b951
Local pid:
ora:1418
Deposit date:
2008-03-14

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