Absence of magnetic long range order in Ba${}_3$ZnRu${}_2$O${}_9$: A spin-liquid candidate in the $S=3/2$ dimer lattice

Abstract

We have discovered a novel candidate for a spin liquid state in a ruthenium oxide composed of dimers of $S=$ 3/2 spins of Ru${}^{5+}$,Ba${}_3$ZnRu${}_2$O${}_9$. This compound lacks a long range order down to 37 mK, which is a temperature 5000-times lower than the magnetic interaction scale of around 200 K. Partial substitution for Zn can continuously vary the magnetic ground state from an antiferromagnetic order to a spin-gapped state through the liquid state. This indicates that the spin-liquid state emerges from a delicate balance of inter- and intra-dimer interactions, and the spin state of the dimer plays a vital role. This unique feature should realize a new type of quantum magnetism.

arXiv comment5 pages, 4 figures

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Cited by in corpus (9)

• Spin-liquid-like state in a spin-1/2 square-lattice antiferromagnet perovskite induced by $d^{10}$-$d^0$ cation mixing
• Electronic correlations and competing orders in multiorbital dimers: a cluster DMFT study
• Dynamical coupling of dilute magnetic impurities with quantum spin liquid state in the S = 3/2 dimer compound Ba3ZnRu2O9
• Disorder driven cluster glass state in a geometrically frustrated hexagonal perovskite
• Spin nematics next to spin singlets
• Abundant quadrupolar or nematic phases driven by the Heisenberg interactions in a spin-1 dimer system forming a bilayer
• Gapless dynamic magnetic ground state in the charge-gapped trimer iridate Ba${}_4$NbIr${}_3$O${}_{12}$
• Novel quantum spin liquid ground state in the trimer rhodate Ba${}_4$NbRh${}_3$O${}_{12}$
• Magnetic ground state of the dimer-based hexagonal perovskite Ba${}_3$ZnRu${}_2$O${}_9$