The magnetic ground state of the Double-trillium Lattice Spin Liquid Candidate KSrFe2(PO4)3 was investigated by nuclear magnetic resonance technique.
Scientific Achievement:
Nuclear magnetic resonance (NMR) measurements on the spin-frustrated double trillium system KSrFe2(PO4)3 revealed the complex magnetic ground state where short-range spin freezing coexists with persistent antiferromagnetic fluctuations.
Significance and Impact:
This is the first microscopic experimental evidence showing a quasi-static, spin-frozen magnetic state in KSrFe2(PO4)3, contradicting earlier proposals of a gapless spin-liquid state. This provides important insights into the understanding of the new three-dimensional frustrated system of the double trillium spin lattice .
Research Details:
- 31P nuclear magnetic resonance measurements of KSrFe2(PO4)3 under various magnetic fields ranging from 0.45 to 7.4 Tesla in a wide temperature range of T = 1.5 – 300 Kelvin.
- Trillium spin lattice has recently attracted much attention as a new three-dimensional frustrated spin system. KSrFe2(PO4)3 is one of the rare trillium spin lattice systems.
Sebin J. Sebastian, Qing-Ping Ding, Alexander. A. Tsirlin, Ramesh Nath, and Yuji Furukawa, Physical Review B, 112, L220406 (2025). Editors’ suggestion. https://doi.org/10.1103/k3lw-2567