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arXiv · 2406.04065

Low-temperature spin dynamics and absence of magnetic order in layered $\alpha$-RuI$_3$

Hank C. H. Wu·Benjamin M. Huddart·Francis L. Pratt·Danrui Ni·Robert J. Cava·Stephen J. Blundell
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Abstract

The triangular-lattice system $\alpha$-RuI$_3$ is isostructural to the widely-studied $\alpha$-RuCl$_3$ compound which was identified as a potential Kitaev system but exhibits, instead of spin liquid behaviour, a magnetically ordered zig-zag ground state which sets in below 14~K. Here we show experimentally that, in contrast, the spins in $\alpha$-RuI$_3$ remain dynamic down to at least 50~mK. We study the spin dynamics using muon-spin relaxation methods and determine the presence of low-frequency fluctuations which are characteristic of a two-dimensional system.

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Hank C. H. Wu, Benjamin M. Huddart, Francis L. Pratt, Danrui Ni, Robert J. Cava, Stephen J. Blundell. 2024-06-06. Low-temperature spin dynamics and absence of magnetic order in layered $\alpha$-RuI$_3$. https://doi.org/10.1103/kxbj-gp8z

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