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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2504.08442 |
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| _version_ | 1866915236951359488 |
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| author | Bermudez, Mariano Marziali Borzi, R. A. Tennant, D. A. Grigera, S. A. |
| author_facet | Bermudez, Mariano Marziali Borzi, R. A. Tennant, D. A. Grigera, S. A. |
| contents | The thermal equilibrium properties of the spin-ice material DTO, including specific heat, magnetization, and spin correlations, could be successfully reproduced by a model featuring magnetic interactions up to the third nearest neighbor and long-ranged dipolar forces. With the best-fit parameters, the model predicts an ordered ground state which breaks the cubic symmetry of the lattice. In this work, we analyze results from a neutron scattering experiment in which, instead of sharp Bragg peaks, a diffuse pattern was observed down to 300mK, despite very slow cooling [A. M. Samarakoon et al., Physical Review Research 4,033159 (2022).]. Using a reverse Monte Carlo approach, we found compatible spin configurations, analyze the suitability of antiferromagnetic spin chains as building blocks for the ground-state and provide various measures of correlation and calculate their energy. Our analysis suggests that while infinitely long chains are not present in the experimental configuration, antiferromagnetic spin chains provide a good approximation of the data. There are indications of possible evidence for short-range chains, but further investigation is needed for confirmation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_08442 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Investigation into the low temperature state of the spin-ice material Dy_2 Ti_2 O_7 Bermudez, Mariano Marziali Borzi, R. A. Tennant, D. A. Grigera, S. A. Strongly Correlated Electrons The thermal equilibrium properties of the spin-ice material DTO, including specific heat, magnetization, and spin correlations, could be successfully reproduced by a model featuring magnetic interactions up to the third nearest neighbor and long-ranged dipolar forces. With the best-fit parameters, the model predicts an ordered ground state which breaks the cubic symmetry of the lattice. In this work, we analyze results from a neutron scattering experiment in which, instead of sharp Bragg peaks, a diffuse pattern was observed down to 300mK, despite very slow cooling [A. M. Samarakoon et al., Physical Review Research 4,033159 (2022).]. Using a reverse Monte Carlo approach, we found compatible spin configurations, analyze the suitability of antiferromagnetic spin chains as building blocks for the ground-state and provide various measures of correlation and calculate their energy. Our analysis suggests that while infinitely long chains are not present in the experimental configuration, antiferromagnetic spin chains provide a good approximation of the data. There are indications of possible evidence for short-range chains, but further investigation is needed for confirmation. |
| title | Investigation into the low temperature state of the spin-ice material Dy_2 Ti_2 O_7 |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2504.08442 |