Fragmented Spin Liquid and Shadow Pinch Points in Dipole-Octupole Pyrochlore Spin Systems
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866915504456728576 |
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| author | Lozano-Gómez, Daniel Yan, Han |
| author_facet | Lozano-Gómez, Daniel Yan, Han |
| contents | We study the classical dipole-octupole pyrochlore spin systems in an external magnetic field along the $[111]$ direction. We identify an intermediate fragmented spin liquid phase that precedes full spin saturation, characterized by the coexistence of three phenomena: U(1) spin liquid on the Kagome planes, spontaneous $\mathbb{Z}_2$ symmetry breaking, and partial spin polarization from explicit symmetry breaking. We show that even without dipolar interactions, the dipolar components can form a spin liquid driven by the octupolar spin liquid. The physics manifests itself experimentally as shadow pinch points: low-intensity pinch points underlying the strong Bragg peaks. We discuss how these discoveries are directly relevant to various experiments on dipole-octupole pyrochlore materials, including neutron scattering, magnetization, and magnetostriction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_09205 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Fragmented Spin Liquid and Shadow Pinch Points in Dipole-Octupole Pyrochlore Spin Systems Lozano-Gómez, Daniel Yan, Han Strongly Correlated Electrons We study the classical dipole-octupole pyrochlore spin systems in an external magnetic field along the $[111]$ direction. We identify an intermediate fragmented spin liquid phase that precedes full spin saturation, characterized by the coexistence of three phenomena: U(1) spin liquid on the Kagome planes, spontaneous $\mathbb{Z}_2$ symmetry breaking, and partial spin polarization from explicit symmetry breaking. We show that even without dipolar interactions, the dipolar components can form a spin liquid driven by the octupolar spin liquid. The physics manifests itself experimentally as shadow pinch points: low-intensity pinch points underlying the strong Bragg peaks. We discuss how these discoveries are directly relevant to various experiments on dipole-octupole pyrochlore materials, including neutron scattering, magnetization, and magnetostriction. |
| title | Fragmented Spin Liquid and Shadow Pinch Points in Dipole-Octupole Pyrochlore Spin Systems |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2509.09205 |