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

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

Strongly Correlated Electrons 2024-06-07 v1

Authors: Hank C. H. Wu , Benjamin M. Huddart , Francis L. Pratt , Danrui Ni , Robert J. Cava , Stephen J. Blundell

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.

Keywords

α-RuI₃ spin dynamics magnetic order Kitaev system muon-spin relaxation triangular lattice

Cite

@article{arxiv.2406.04065,
  title  = {Low-temperature spin dynamics and absence of magnetic order in layered $\alpha$-RuI$_3$},
  author = {Hank C. H. Wu and Benjamin M. Huddart and Francis L. Pratt and Danrui Ni and Robert J. Cava and Stephen J. Blundell},
  journal= {arXiv preprint arXiv:2406.04065},
  year   = {2024}
}

Comments

5 pages, 5 figures

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