Controlling frustrated magnetism on the kagome lattice by uniaxial-strain tuning

Abstract

It is predicted that strongly interacting spins on a frustrated lattice may lead to a quantum disordered ground state or even form a quantum spin liquid with exotic low-energy excitations. However, a thorough tuning of the frustration strength, separating its effects from those of disorder and other factors, is pending. Here we break the symmetry of a kagome-lattice compound in a controlled manner by applying $in$ $situ$ uniaxial stress. The transition temperature of ${\mathrm{Y}}_3\mathrm{C}{\mathrm{u}}_9(\mathrm{OH}{)}_{18}\mathrm{OC}{\mathrm{l}}_8$ is linearly enhanced with strain, $\Delta T_{\mathrm{N}}/T_{\mathrm{N}}\approx 10\%$ upon in-plane compression of order $1\%$, providing clear evidence for a release of frustration and its pivotal role for magnetic order. Our comprehensive ${}^1$H NMR results suggest a $\overrightarrow{Q}=(1/3\times 1/3)$ state under unstrained conditions and further reveal an incomplete antiferromagnetic transition with fluctuating moments in this strongly frustrated system.

7 pages total, 4 pages main text, 5 figures

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Cited by in corpus (11)

• Magnetic ground states in kagome YCu${}_3$(OH)${}_6$[(Cl${}_x$Br${}_{1-x}$)${}_{3-y}$(OH)${}_y$]
• NMR evidence of spinon localization in kagome antiferromagnet YCu${}_3$(OH)${}_6$Br${}_2$[Br${}_{1-x}$(OH)${}_x$]
• Tuning electronic pairing by uniaxial strain in kagome lattices
• Chemo-Structural Disorder in the kagomé spin $S$ = 1/2 systems ZnCu${}_3$(OH)${}_6$Cl${}_2$ and YCu${}_3$(OH)${}_6$Br${}_2$[Br${}_x$(OH)${}_{1-x}$]
• Lattice dynamics of the frustrated kagome compound Y-kapellasite
• Magnetic field-induced momentum-dependent symmetry breaking in a kagome superconductor
• Exerting chemical pressure on the kagome lattice as frustration control in the kapellasite family $A$Cu${}_3$(OH)${}_{6+x}$(Cl,Br)${}_{3-x}$
• Pressure-tuned spin chains in brochantite, Cu${}_4$SO${}_4$(OH)${}_6$
• Emergence of a Fluctuating Ground State in Y-kapellasite under Pressure
• SrCu(OH)${}_3$Cl, an ideal isolated equilateral triangle spin $S$ = 1/2 model system
• Pressure induced evolution of anisotropic superconductivity and Fermi surface nesting in a ternary boride