Evidence for spin liquid behavior in the frustrated three-dimensional $S = 1/2$ Heisenberg garnet NaCa$_{2}$Cu$_{2}$(VO$_{4}$)$_{3}$

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.

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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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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Evidence for spin liquid behavior in the frustrated three-dimensional S=1/2S=1/2 Heisenberg garnet NaCa22​Cu22​(VO44​)33​

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Evidence for spin liquid behavior in the frustrated three-dimensional S=1/2S=1/2 Heisenberg garnet NaCa22​Cu22​(VO44​)33​

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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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AI智能校验

Evidence for spin liquid behavior in the frustrated three-dimensional $S = 1 / 2$ Heisenberg garnet NaCa $_{2}$ Cu $_{2}$ (VO $_{4}$ ) $_{3}$

讲解博客

AI智能校验