Coupled dimerized alternating-bond quantum spin chains in the distorted honeycomb-lattice magnet Cu5SbO6
1
Issued Date
2026-01-01
Resource Type
ISSN
26431564
Scopus ID
2-s2.0-105032371477
Journal Title
Physical Review Research
Volume
8
Issue
1
Rights Holder(s)
SCOPUS
Bibliographic Citation
Physical Review Research Vol.8 No.1 (2026)
Suggested Citation
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. Coupled dimerized alternating-bond quantum spin chains in the distorted honeycomb-lattice magnet Cu5SbO6. Physical Review Research Vol.8 No.1 (2026). doi:10.1103/vdgg-d128 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/115727
Title
Coupled dimerized alternating-bond quantum spin chains in the distorted honeycomb-lattice magnet Cu5SbO6
Author's Affiliation
The University of Tokyo
Tohoku University
National Taiwan University
Tokyo University of Science
A. James Clark School of Engineering
Faculty of Science, Mahidol University
Ministry of Higher Education, Science, Research and Innovation
NIST Center for Neutron Research
J-PARC Center
Synchrotron Light Research Institute
National Science and Technology Council
Tohoku University
National Taiwan University
Tokyo University of Science
A. James Clark School of Engineering
Faculty of Science, Mahidol University
Ministry of Higher Education, Science, Research and Innovation
NIST Center for Neutron Research
J-PARC Center
Synchrotron Light Research Institute
National Science and Technology Council
Corresponding Author(s)
Other Contributor(s)
Abstract
We analyze powder-averaged inelastic neutron scattering and magnetization data for the distorted honeycomb compound Cu5SbO6 using a first-order dimer expansion calculation and quantum Monte Carlo simulations. We show that, in contrast to the previously proposed honeycomb-lattice model, Cu5SbO6 accommodates interacting dimerized spin chains with alternating ferromagnetic-antiferromagnetic couplings along the chain. Moreover, unlike the typical couplings observed in other Cu2+-based distorted honeycomb magnets, the spin chains in Cu5SbO6 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 Cu5SbO6. In addition, utilizing x-ray spectroscopy and transmission electron microscopy, we also refine the crystal structure and stacking-fault model of the compound.