Coupled dimerized alternating-bond quantum spin chains in the distorted honeycomb-lattice magnet Cu$_5$SbO$_6$
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arXiv
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915838904238080 |
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| author | Piyakulworawat, C. Morita, K. Fukumoto, Y. Hsieh, W. -Y. Chen, W. -T. Nakajima, K. Ohira-Kawamura, S. Zhao, Y. Wannapaiboon, S. Piyawongwatthana, P. Sato, T. J. Matan, K. |
| author_facet | Piyakulworawat, C. Morita, K. Fukumoto, Y. Hsieh, W. -Y. Chen, W. -T. Nakajima, K. Ohira-Kawamura, S. Zhao, Y. Wannapaiboon, S. Piyawongwatthana, P. Sato, T. J. Matan, K. |
| contents | We analyze powder-averaged inelastic neutron scattering and magnetization data for the distorted honeycomb compound Cu$_5$SbO$_6$ using a first-order dimer expansion calculation and quantum Monte Carlo simulations. We show that, in contrast to the previously proposed honeycomb lattice model, Cu$_5$SbO$_6$ accommodates interacting dimerized spin chains with alternating ferromagnetic-antiferromagnetic couplings along the chain. Moreover, unlike the typical couplings observed in other Cu$^{2+}$-based distorted honeycomb magnets, the spin chains in Cu$_5$SbO$_6$ primarily couple through an antiferromagnetic coupling that arises between the honeycomb layers, rather than the expected interchain coupling in the layers. This finding reveals a different magnetic coupling scheme for Cu$_5$SbO$_6$. In addition, utilizing x-ray spectroscopy and transmission electron microscopy, we also refine the crystal structure and stacking-fault model of the compound. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_05037 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Coupled dimerized alternating-bond quantum spin chains in the distorted honeycomb-lattice magnet Cu$_5$SbO$_6$ Piyakulworawat, C. Morita, K. Fukumoto, Y. Hsieh, W. -Y. Chen, W. -T. Nakajima, K. Ohira-Kawamura, S. Zhao, Y. Wannapaiboon, S. Piyawongwatthana, P. Sato, T. J. Matan, K. Strongly Correlated Electrons We analyze powder-averaged inelastic neutron scattering and magnetization data for the distorted honeycomb compound Cu$_5$SbO$_6$ using a first-order dimer expansion calculation and quantum Monte Carlo simulations. We show that, in contrast to the previously proposed honeycomb lattice model, Cu$_5$SbO$_6$ accommodates interacting dimerized spin chains with alternating ferromagnetic-antiferromagnetic couplings along the chain. Moreover, unlike the typical couplings observed in other Cu$^{2+}$-based distorted honeycomb magnets, the spin chains in Cu$_5$SbO$_6$ primarily couple through an antiferromagnetic coupling that arises between the honeycomb layers, rather than the expected interchain coupling in the layers. This finding reveals a different magnetic coupling scheme for Cu$_5$SbO$_6$. In addition, utilizing x-ray spectroscopy and transmission electron microscopy, we also refine the crystal structure and stacking-fault model of the compound. |
| title | Coupled dimerized alternating-bond quantum spin chains in the distorted honeycomb-lattice magnet Cu$_5$SbO$_6$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2511.05037 |