Polarized neutron scattering studies of the kagome lattice antiferromagnet KFe[subscript 3](OH)[subscript 6](SO[subscript 4])[subscript 2]
We report polarized neutron scattering studies of spin-wave excitations and spin fluctuations in the S = 5/2 kagome lattice antiferromagnet KFe[subscript 3](OH)[subscript 6](SO[subscript 4])[subscript 2] (jarosite). Inelastic polarized neutron scattering measurements at 10 K on a single crystal samp...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Elsevier
2016
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| Online Access: | http://hdl.handle.net/1721.1/102198 https://orcid.org/0000-0002-4507-1115 https://orcid.org/0000-0002-7022-8313 |
| Summary: | We report polarized neutron scattering studies of spin-wave excitations and spin fluctuations in the S = 5/2 kagome lattice antiferromagnet KFe[subscript 3](OH)[subscript 6](SO[subscript 4])[subscript 2] (jarosite). Inelastic polarized neutron scattering measurements at 10 K on a single crystal sample reveal two spin gaps, associated with in-plane and out-of-plane excitations. The polarization analysis of quasi-elastic scattering at 67 K shows in-plane spin fluctuations with XY symmetry, consistent with the disappearance of the in-plane gap above the Neel temperature T[subscript N] = 65 K. Our results suggest that jarosite is a promising candidate for studying the 2D XY universality class in magnetic systems. |
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