Evidence for spin liquid behavior in the frustrated three-dimensional $S = 1/2$ Heisenberg garnet NaCa$_{2}$Cu$_{2}$(VO$_{4}$)$_{3}$
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arXiv
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| Autori principali: | , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866911366748569600 |
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| author | Alexanian, Y. Kumar, R. Zeroual, H. Bernu, B. Mangin-Thro, L. Stewart, J. R. Wilkinson, J. M. Bhattacharya, S. Paulose, P. L. Bert, F. Mendels, P. Fåk, B. Kermarrec, E. |
| author_facet | Alexanian, Y. Kumar, R. Zeroual, H. Bernu, B. Mangin-Thro, L. Stewart, J. R. Wilkinson, J. M. Bhattacharya, S. Paulose, P. L. Bert, F. Mendels, P. Fåk, B. Kermarrec, E. |
| contents | Three-dimensional quantum spin liquids have remained elusive, hindered by reduced quantum fluctuations from larger lattice connectivity inherent to high-dimensional systems. Here, we investigate the remarkable persistence of dynamical short-range magnetic correlations in the nearly body-centered cubic garnet NaCa$_{2}$Cu$_{2}$(VO$_{4}$)$_{3}$ down to $T = 50$ mK, two orders of magnitude below its Curie-Weiss temperature. Using a combination of neutron and muon spectroscopies plus numerical simulations, we demonstrate that a dynamical regime emerges, characterized by a dual response in the inelastic spectrum composed of short-live dispersive excitations and a quasi-elastic component. Strongly frustrated exchange interactions combined with subtle temperature-dependent Jahn-Teller spin-lattice effects are a plausible mechanism to explain the origin of this spin-liquid behavior. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_04653 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Evidence for spin liquid behavior in the frustrated three-dimensional $S = 1/2$ Heisenberg garnet NaCa$_{2}$Cu$_{2}$(VO$_{4}$)$_{3}$ Alexanian, Y. Kumar, R. Zeroual, H. Bernu, B. Mangin-Thro, L. Stewart, J. R. Wilkinson, J. M. Bhattacharya, S. Paulose, P. L. Bert, F. Mendels, P. Fåk, B. Kermarrec, E. Strongly Correlated Electrons Materials Science Three-dimensional quantum spin liquids have remained elusive, hindered by reduced quantum fluctuations from larger lattice connectivity inherent to high-dimensional systems. Here, we investigate the remarkable persistence of dynamical short-range magnetic correlations in the nearly body-centered cubic garnet NaCa$_{2}$Cu$_{2}$(VO$_{4}$)$_{3}$ down to $T = 50$ mK, two orders of magnitude below its Curie-Weiss temperature. Using a combination of neutron and muon spectroscopies plus numerical simulations, we demonstrate that a dynamical regime emerges, characterized by a dual response in the inelastic spectrum composed of short-live dispersive excitations and a quasi-elastic component. Strongly frustrated exchange interactions combined with subtle temperature-dependent Jahn-Teller spin-lattice effects are a plausible mechanism to explain the origin of this spin-liquid behavior. |
| title | Evidence for spin liquid behavior in the frustrated three-dimensional $S = 1/2$ Heisenberg garnet NaCa$_{2}$Cu$_{2}$(VO$_{4}$)$_{3}$ |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2501.04653 |