ISIS Neutron and Muon Source Data Journal

Magnetic Excitations in a Possible Quantum Ferromagnet

Abstract: The proposed experiment is to measure in considerable detail the magnetic excitations inY2V2O7. Bulk measurements on this pyrochlore magnet show that it is a ferromagnet with a transition temperature close to 70 K. Like its counterpart, Lu2V2O7, we expect Y2V2O7 to have significant Dzyaloshinskii-Moriya exchange (DM) leading to a nontrivial Berry curvature and unusual thermal transport properties as well as characteristic magnon damping. Even more interesting, Y2V2O7 is a strong candidate to host Weyl points in its magnon band structure which have not been observed before. Their presence would imply the presence of topologically-protected surface states and potentially other unusual properties. Our experiment will enable us to carry out a complete characterization of the magnetic exchange in this material and potentially observe the magnetic Weyl points.

Principal Investigator: Professor Radu Coldea
Experimenter: Dr Paul McClarty
Local Contact: Dr Helen Walker
Experimenter: Dr Dharmalingan Prabhakaran
Local Contact: Dr Devashi Adroja
Experimenter: Miss Leonie Woodland

DOI: 10.5286/ISIS.E.RB1920679

ISIS Experiment Number: RB1920679

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:
Professor Radu Coldea et al; (2021): Magnetic Excitations in a Possible Quantum Ferromagnet, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1920679

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