Journal
PHYSICAL REVIEW LETTERS
Volume 127, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.127.157204
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Funding
- Swiss National Science Foundation (SNSF) [200021-169699, 206021-189644]
- SNFS Projects [206021-189644, 200020-188648]
- Deutsche Forschungsgemeinschaft (DFG) [SFB 1143]
- Wurzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter-ct: qmat [EXC 2147, 390858490]
- HLD at HZDR
- FAPESP [2015/16191-5]
- CNPq [429511/2018-3]
- German Research Foundation [CRC183]
- SERB, Department of Science and Technology (DST), India [SRG/2019/000056, MTR/2019/001042]
- Indo-French Center for the Promotion of Advanced Research CEFIPRA [64T3-1]
- National Science Foundation [NSF PHY-1748958]
- ICTP through the Simons Associateship scheme
- ICTS, Bengaluru, India [ICTS/topmatter2019/12]
- Innovation Pool project MaDQuanT
- IIT Madras through the IoE program [SB20210813PHMHRD002720]
- Swiss National Science Foundation (SNF) [206021_189644, 200021_169699, 200020_188648] Funding Source: Swiss National Science Foundation (SNF)
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Quantum spin liquids are exotic states of matter that form under strong frustrated magnetic interactions, with interconnected spin-1 trillium lattices exhibiting a significantly elevated level of geometrical frustration. Experimental and computational analysis showed a highly correlated and dynamic three-dimensional network structure with characteristics resembling a quantum spin liquid state under specific conditions.
Quantum spin liquids are exotic states of matter that form when strongly frustrated magnetic interactions induce a highly entangled quantum paramagnet far below the energy scale of the magnetic interactions. Three-dimensional cases are especially challenging due to the significant reduction of the influence of quantum fluctuations. Here, we report the magnetic characterization of K2Ni2(SO4)(3) forming a three-dimensional network of Ni2+ spins. Using density functional theory calculations, we show that this network consists of two interconnected spin-1 trillium lattices. In the absence of a magnetic field, magnetization, specific heat, neutron scattering, and muon spin relaxation experiments demonstrate a highly correlated and dynamic state, coexisting with a peculiar, very small static component exhibiting a strongly renonnalized moment. A magnetic field B greater than or similar to 4 T diminishes the ordered component and drives the system into a pure quantum spin liquid state. This shows that a system of interconnected S = 1 trillium lattices exhibits a significantly elevated level of geometrical frustration.
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