ISIS Neutron and Muon Source Data Journal

Spin anisotropy of Seff=1/2 triangular rare-earth based antiferromagnets

Abstract: The rise of quantum materials observed in the past decades has been a source of great excitement for condensed matter scientists, with the flourishing of new concepts and electronic phases of matter. In particular the Quantum Spin Liquid (QSL) state has attracted a lot of attention as it shows intriguing collective phenomena such as fractionalized excitations or emergent gauge fields. A new Seff=1/2 rare-earth based material, YbMgGaO4, was recently shown to avoid any spin freezing down to T = 50mK and to display a continuum of excitations. However, the presence of intersite mixing between Mg2+ and Ga3+ has dramatic effects on these low energy excitations. Here, we propose to use neutron spectroscopy to confirm two new triangular compounds (KYbVO and KCsYbPO) that are free of such defects as Seff=1/2 quantum spin liquid candidates and further determine their spin anisotropy.

Principal Investigator: Dr Edwin Kermarrec
Experimenter: Dr Ramender Kumar Sharma
Experimenter: Mr Suvam Bhattacharya
Experimenter: Professor Fabrice Bert
Local Contact: Dr Helen Walker

DOI: 10.5286/ISIS.E.RB1910469

ISIS Experiment Number: RB1910469

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 Edwin Kermarrec et al; (2019): Spin anisotropy of Seff=1/2 triangular rare-earth based antiferromagnets, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1910469

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