Intermediate magnetization state and competing orders in Dy2Ti2O7 and Ho2Ti2O7
Among the frustrated magnetic materials, spin-ice stands out as a particularly interesting system. Residual entropy, freezing and glassiness, Kasteleyn transitions and fractionalization of excitations in three dimensions all stem from a simple classical Hamiltonian. But is the usual spin-ice Hamilto...
| Main Authors: | , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Nature
2016
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| _version_ | 1826296988785704960 |
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| author | Borzi, R Gómez Albarracín, F Rosales, H Rossini, G Steppke, A Prabhakaran, D Mackenzie, A Cabra, D Grigera, S |
| author_facet | Borzi, R Gómez Albarracín, F Rosales, H Rossini, G Steppke, A Prabhakaran, D Mackenzie, A Cabra, D Grigera, S |
| author_sort | Borzi, R |
| collection | OXFORD |
| description | Among the frustrated magnetic materials, spin-ice stands out as a particularly interesting system. Residual entropy, freezing and glassiness, Kasteleyn transitions and fractionalization of excitations in three dimensions all stem from a simple classical Hamiltonian. But is the usual spin-ice Hamiltonian a correct description of the experimental systems? Here we address this issue by measuring magnetic susceptibility in the two most studied spin-ice compounds, Dy2Ti2O7 and Ho2Ti2O7, using a vector magnet. Using these results, and guided by a theoretical analysis of possible distortions to the pyrochlore lattice, we construct an effective Hamiltonian and explore it using Monte Carlo simulations. We show how this Hamiltonian reproduces the experimental results, including the formation of a phase of intermediate polarization, and gives important information about the possible ground state of real spin-ice systems. Our work suggests an unusual situation in which distortions might contribute to the preservation rather than relief of the effects of frustration. |
| first_indexed | 2024-03-07T04:24:46Z |
| format | Journal article |
| id | oxford-uuid:cc3fc28e-9561-4f98-8934-5f92be2541c1 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:24:46Z |
| publishDate | 2016 |
| publisher | Nature |
| record_format | dspace |
| spelling | oxford-uuid:cc3fc28e-9561-4f98-8934-5f92be2541c12022-03-27T07:20:38ZIntermediate magnetization state and competing orders in Dy2Ti2O7 and Ho2Ti2O7Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:cc3fc28e-9561-4f98-8934-5f92be2541c1EnglishSymplectic Elements at OxfordNature2016Borzi, RGómez Albarracín, FRosales, HRossini, GSteppke, APrabhakaran, DMackenzie, ACabra, DGrigera, SAmong the frustrated magnetic materials, spin-ice stands out as a particularly interesting system. Residual entropy, freezing and glassiness, Kasteleyn transitions and fractionalization of excitations in three dimensions all stem from a simple classical Hamiltonian. But is the usual spin-ice Hamiltonian a correct description of the experimental systems? Here we address this issue by measuring magnetic susceptibility in the two most studied spin-ice compounds, Dy2Ti2O7 and Ho2Ti2O7, using a vector magnet. Using these results, and guided by a theoretical analysis of possible distortions to the pyrochlore lattice, we construct an effective Hamiltonian and explore it using Monte Carlo simulations. We show how this Hamiltonian reproduces the experimental results, including the formation of a phase of intermediate polarization, and gives important information about the possible ground state of real spin-ice systems. Our work suggests an unusual situation in which distortions might contribute to the preservation rather than relief of the effects of frustration. |
| spellingShingle | Borzi, R Gómez Albarracín, F Rosales, H Rossini, G Steppke, A Prabhakaran, D Mackenzie, A Cabra, D Grigera, S Intermediate magnetization state and competing orders in Dy2Ti2O7 and Ho2Ti2O7 |
| title | Intermediate magnetization state and competing orders in Dy2Ti2O7 and Ho2Ti2O7 |
| title_full | Intermediate magnetization state and competing orders in Dy2Ti2O7 and Ho2Ti2O7 |
| title_fullStr | Intermediate magnetization state and competing orders in Dy2Ti2O7 and Ho2Ti2O7 |
| title_full_unstemmed | Intermediate magnetization state and competing orders in Dy2Ti2O7 and Ho2Ti2O7 |
| title_short | Intermediate magnetization state and competing orders in Dy2Ti2O7 and Ho2Ti2O7 |
| title_sort | intermediate magnetization state and competing orders in dy2ti2o7 and ho2ti2o7 |
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