ISIS Neutron and Muon Source Data Journal

Tuning a 2D square lattice magnet into the bond-nematic quantum critical region

Abstract: Frustrated square-lattice antiferromagnets with competing interactions are prototypical model systems to study complex magnetic correlations. For the generalised model including ferromagnetic interactions a new bond-nematic phase is predicted by theory. We have been able to synthesize the compound BaCdVO(PO4)2 and recently proved that it lies right on the border of a columnar antiferromagnetic phase with the spin-nematic phase. Theory predicts a low energy excitation mode, accessible by inelastic neutron scattering. Observation of this would be strong evidence for the existence of the long sought bond-nematic region. Here we propose to drive this material right inside the spin-nematic phase by an externally applied magnetic field. Temperatures below TN = 1K and magnetic fields up to Hc = 5 T are required, together with the excellent low-energy intensity and resolution provided by LET.

Principal Investigator: Dr Markos Skoulatos
Local Contact: Dr Rob Bewley
Experimenter: Dr Andrew Smerald
Experimenter: Dr Alexandre Bertin

DOI: 10.5286/ISIS.E.RB1910002

ISIS Experiment Number: RB1910002

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 Markos Skoulatos et al; (2019): Tuning a 2D square lattice magnet into the bond-nematic quantum critical region, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1910002

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