Fluctuating magnetism in Zn-doped averievite with well-separated kagome layers
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2025
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| author | Simutis, G. Suárez-García, L. Zeroual, H. Villa, I. Georgopoulou, M. Boldrin, D. Wang, C. N. Baines, C. Shiroka, T. Khasanov, R. Luetkens, H. Fåk, B. Sassa, Y. Bartkowiak, M. Wills, A. S. Kermarrec, E. Bert, F. Mendels, P. |
| author_facet | Simutis, G. Suárez-García, L. Zeroual, H. Villa, I. Georgopoulou, M. Boldrin, D. Wang, C. N. Baines, C. Shiroka, T. Khasanov, R. Luetkens, H. Fåk, B. Sassa, Y. Bartkowiak, M. Wills, A. S. Kermarrec, E. Bert, F. Mendels, P. |
| contents | Kagome lattice decorated with S=1/2 spins is one of the most discussed ways to realize a quantum spin liquid. However, all previous material realizations of this model have suffered from additional complications, ranging from additional interactions to impurity effects. Recently, a new quantum kagome system has been identified in the form of averievite Cu(5-x)ZnxV2O10(CsCl), featuring a unique double-layer spacing between the kagome planes. Using muon spin spectroscopy we show that only a complete substitution (i.e. $x=2$) of interplanar copper ions leads to a quantum-disordered ground state. In contrast, the parent compound ($x=0$) exhibits long-range magnetic order, with a phase transition around 24 K. Experiments performed on the partially substituted material ($x=1$) show that the transformation proceeds through an intermediate disordered, partially frozen ground state, unaffected by pressures up to 23 kbar. Our study provides a microscopic view of the magnetism of the decoupling of the kagome layers and establishes the averievite as a new material platform for the experimental study of the fully-decoupled kagome layers. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2504_20871 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Fluctuating magnetism in Zn-doped averievite with well-separated kagome layers Simutis, G. Suárez-García, L. Zeroual, H. Villa, I. Georgopoulou, M. Boldrin, D. Wang, C. N. Baines, C. Shiroka, T. Khasanov, R. Luetkens, H. Fåk, B. Sassa, Y. Bartkowiak, M. Wills, A. S. Kermarrec, E. Bert, F. Mendels, P. Strongly Correlated Electrons Kagome lattice decorated with S=1/2 spins is one of the most discussed ways to realize a quantum spin liquid. However, all previous material realizations of this model have suffered from additional complications, ranging from additional interactions to impurity effects. Recently, a new quantum kagome system has been identified in the form of averievite Cu(5-x)ZnxV2O10(CsCl), featuring a unique double-layer spacing between the kagome planes. Using muon spin spectroscopy we show that only a complete substitution (i.e. $x=2$) of interplanar copper ions leads to a quantum-disordered ground state. In contrast, the parent compound ($x=0$) exhibits long-range magnetic order, with a phase transition around 24 K. Experiments performed on the partially substituted material ($x=1$) show that the transformation proceeds through an intermediate disordered, partially frozen ground state, unaffected by pressures up to 23 kbar. Our study provides a microscopic view of the magnetism of the decoupling of the kagome layers and establishes the averievite as a new material platform for the experimental study of the fully-decoupled kagome layers. |
| title | Fluctuating magnetism in Zn-doped averievite with well-separated kagome layers |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2504.20871 |