Coexistence of anomalous spin dynamics and weak magnetic order in a chiral trillium lattice K2FeSn(PO4)3

Abstract

Trillium lattices, where magnetic ions form a three-dimensional chiral network of corner-sharing equilateral triangular motifs, offer a prominent platform to explore exotic quantum states. In this work, we report ground-state properties of the $S$ = 5/2 trillium lattice compound K${}_2$FeSn(PO${}_4$)${}_3$ through thermodynamic, electron spin resonance (ESR), and muon spin relaxation ($\mu$SR) experiments. Thermodynamic and ESR measurements reveal the two-step evolution of magnetic correlations across $T^{\ast }$ = 11 K, which results from an interplay between dominant antiferromagnetic Heisenberg interactions and subleading interactions. Below $T^{\ast }$, \textit{dc} and \textit{ac} magnetic susceptibilities indicate weak \textcolor{black}{magnetic ordering} at $T_{\mathrm{N}}\approx 2$ K under low fields, which is suppressed for ${\mu }_{0}H\ge 2$ T, consistent with a power-law dependence of magnetic specific heat at low temperatures. $\mu$SR experiments confirm the dominance of persistent spin dynamics and the absence of conventional spin freezing, supporting the subtle nature of weak magnetic ordering coexisting with spin-liquid-like fluctuations. These findings underscore the potential for realizing a classical spin-liquid ground state with exotic excitations in high-spin trillium lattice systems.

References in corpus (47)

• Anyons in an exactly solved model and beyond
• Skyrmion Lattice in a Chiral Magnet
• Quantum Spin Liquids
• Quantum Spin Liquids
• Quantum Orders and Symmetric Spin Liquids
• Kitaev quantum spin liquid - concept and materialization
• musrfit: A free platform-independent framework for muSR data analysis
• Low-temperature properties of classical, geometrically frustrated antiferromagnets
• The "Coulomb phase" in frustrated systems
• Spin Ice, Fractionalization and Topological Order
• Dipolar spin correlations in classical pyrochlore magnets
• Field-tunable quantum disordered ground state in the triangular lattice antiferromagnet NaYbO${}_2$
• Experimental signatures of a three-dimensional quantum spin liquid in effective spin-1/2 Ce2Zr2O7 pyrochlore
• Multispinon continua at zero and finite temperature in a near-ideal Heisenberg chain
• Gapless ground state in the archetypal quantum kagome antiferromagnet ZnCu${}_3$(OH)${}_6$Cl${}_2$
• Ferromagnetic Kitaev interaction and the origin of large magnetic anisotropy in $\alpha$-RuCl${}_3$
• Zero Point Entropy in Stuffed Spin Ice
• Evidence for a three-dimensional quantum spin liquid in PbCuTe${}_2$O${}_6$
• Quantum spin liquid in the Ising triangular-lattice antiferromagnet neodymium heptatantalate
• Continuum of quantum fluctuations in a three-dimensional $S=1$ Heisenberg magnet
• Spin Liquid State in the 3D Frustrated Antiferromagnet PbCuTe2O6: NMR and muSR Studies
• Coulomb spin liquid in anion-disordered pyrochlore Tb${}_2$Hf${}_2$O${}_7$
• Geometric frustration inherent to the trillium lattice, a sublattice of the B20 structure
• Experimental signatures of quantum and topological states in frustrated magnetism
• Magnetic field induced quantum spin liquid in the two coupled trillium lattices of K${}_2$Ni${}_2$(SO${}_4$)${}_3$
• Fate of partial order on the trillium and distorted windmill lattices
• Evidence of Dirac Quantum Spin Liquid in YbZn2GaO5
• Classical spiral spin liquids as a possible route to quantum spin liquids
• Hole Spectral Function of a Chiral Spin Liquid in the Triangular Lattice Hubbard Model
• Extreme Suppression of Antiferromagnetic Order and Critical Scaling in a Two-Dimensional Random Quantum Magnet
• Spin ice on the trillium lattice studied by Monte Carlo calculations
• Geometric frustration on the trillium lattice in a magnetic metal-organic framework
• Vacancy-induced spin textures and their interactions in a classical spin liquid
• Signature of a randomness-driven spin-liquid state in a frustrated magnet
• Classical Spin Liquid State in the $S=\frac{5}{2}$ Heisenberg Kagomé Antiferromagnet Li${}_9$Fe${}_3$(P${}_2$O${}_7$)${}_3$(PO${}_4$)${}_2$
• Dynamics of K${}_2$Ni${}_2$(SO${}_4$)${}_3$ governed by proximity to a 3D spin liquid model
• Continuous spin excitations in the three-dimensional frustrated magnet K2Ni2(SO4)3
• Quantum criticality in the coupled two-leg spin ladder Ba2CuTeO6
• Quantum phase diagram and chiral spin liquid in the extended spin-$\frac{1}{2}$ honeycomb XY model
• Magnetism and spin dynamics of an S=3/2 frustrated trillium lattice antiferromagnet K2CrTi(PO4)3
• Chiral spin liquid and quantum phase diagram of spin-$1/2$ $J_1$-$J_2$-$J_{\chi }$ model on the square lattice
• A Classical Chiral Spin-Liquid from Chiral Interactions on the Pyrochlore Lattice
• $\mu$SR study of spin freezing and persistent spin dynamics in NaCaNi${}_2$F${}_7$
• Magnetism and field-induced effects in the S = 5/2 honeycomb lattice antiferromagnet FeP3SiO11
• Fragile spin liquid in three dimensions
• Chiral phononic and electronic edge modes of EuPtSi
• Scaling and data collapse of two-dimensional random singlet state in magnetic field

Cited by in corpus (2)

• Frustration and chirality in three-dimensional trillium lattices: Insights and Perspectives
• Multistage development of short-range spin correlations and weak magnetic order in the two coupled trillium lattices of K2Fe2(MoO4)(PO4)2