Magnetic correlations in YBaCo4O7 probed by single-crystal neutron scattering
We have studied the frustrated system YBaCo4O7 generally described as an alternating stacking of Kagome and triangular layers of magnetic ions on a trigonal lattice, by single crystal neutron diffraction experiments above the Neel ordering transition. Experimental data reveals pronounced magnetic di...
| Main Authors: | , , , , |
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| Format: | Journal article |
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2009
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| _version_ | 1826302910451941376 |
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| author | Manuel, P Chapon, L Radaelli, P Zheng, H Mitchell, J |
| author_facet | Manuel, P Chapon, L Radaelli, P Zheng, H Mitchell, J |
| author_sort | Manuel, P |
| collection | OXFORD |
| description | We have studied the frustrated system YBaCo4O7 generally described as an alternating stacking of Kagome and triangular layers of magnetic ions on a trigonal lattice, by single crystal neutron diffraction experiments above the Neel ordering transition. Experimental data reveals pronounced magnetic diffuse scattering, which is successfully modeled by direct Monte-Carlo simulations. Long-range magnetic correlations are found along the c-axis, due to the presence of corner-sharing bipyramids, creating quasi one-dimensional order at finite temperature. In contrast, in the Kagome layers ab-plane, the spin-spin correlation function -displaying a short-range 120 degrees configuration- decays rapidly as typically found in spin-liquids. YBaCo4O7 experimentally realizes a new class of two-dimensional frustrated systems where the strong out-of-plane coupling does not lift the in-plane degeneracy, but instead act as an external "field". |
| first_indexed | 2024-03-07T05:54:37Z |
| format | Journal article |
| id | oxford-uuid:ea19f101-d065-4713-99c6-15ddb7b29c2c |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:54:37Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:ea19f101-d065-4713-99c6-15ddb7b29c2c2022-03-27T10:59:09ZMagnetic correlations in YBaCo4O7 probed by single-crystal neutron scatteringJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:ea19f101-d065-4713-99c6-15ddb7b29c2cSymplectic Elements at Oxford2009Manuel, PChapon, LRadaelli, PZheng, HMitchell, JWe have studied the frustrated system YBaCo4O7 generally described as an alternating stacking of Kagome and triangular layers of magnetic ions on a trigonal lattice, by single crystal neutron diffraction experiments above the Neel ordering transition. Experimental data reveals pronounced magnetic diffuse scattering, which is successfully modeled by direct Monte-Carlo simulations. Long-range magnetic correlations are found along the c-axis, due to the presence of corner-sharing bipyramids, creating quasi one-dimensional order at finite temperature. In contrast, in the Kagome layers ab-plane, the spin-spin correlation function -displaying a short-range 120 degrees configuration- decays rapidly as typically found in spin-liquids. YBaCo4O7 experimentally realizes a new class of two-dimensional frustrated systems where the strong out-of-plane coupling does not lift the in-plane degeneracy, but instead act as an external "field". |
| spellingShingle | Manuel, P Chapon, L Radaelli, P Zheng, H Mitchell, J Magnetic correlations in YBaCo4O7 probed by single-crystal neutron scattering |
| title | Magnetic correlations in YBaCo4O7 probed by single-crystal neutron
scattering |
| title_full | Magnetic correlations in YBaCo4O7 probed by single-crystal neutron
scattering |
| title_fullStr | Magnetic correlations in YBaCo4O7 probed by single-crystal neutron
scattering |
| title_full_unstemmed | Magnetic correlations in YBaCo4O7 probed by single-crystal neutron
scattering |
| title_short | Magnetic correlations in YBaCo4O7 probed by single-crystal neutron
scattering |
| title_sort | magnetic correlations in ybaco4o7 probed by single crystal neutron scattering |
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