ISIS Neutron and Muon Source Data Journal

Muon spin relaxation study in the supersolid state candidate EuNi2Al9

Abstract: With the growing constraints of helium-based refrigeration, frustrated quantum magnets have emerged as a transformative platform for sub-Kelvin cooling. A giant magnetocaloric effect associated with spin supersolidity has been observed in the demagnetization cooling process of the triangular-lattice antiferromagnet, opening up a promising path for its application in sub-kelvin refrigeration. Here we propose EuNi2Al9, a metallic high-spin antiferromagnet, to be a spin-supersolid candidate. It exhibits an apparent 1/3 magnetization plateau when the field is applied along the c axis. Given that field-induced plateau transitions are characteristic of supersolidity, elucidating the evolution of magnetic structure with the applied magnetic field is of paramount importance. We propose to perform zero field and longitudinal field µSR experiments on EuNi2Al9 single crystals. These experiments will help us better understand the evolution of this interesting state under varying magnetic fields.

Principal Investigator: Dr Jie Ma
Experimenter: Dr Wei Xu
Local Contact: Dr Mark Telling
Experimenter: Dr Mingfang Shu

DOI: 10.5286/ISIS.E.RB2520262

ISIS Experiment Number: RB2520262

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Jie Ma et al; (2026): Muon spin relaxation study in the supersolid state candidate EuNi2Al9, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2520262

Data is released under the CC-BY-4.0 license.