ISIS Neutron and Muon Source Data Journal

The magnetic ground state of the elemental spin-liquid candidate beta-Mn

Abstract: The aim of this proposal is to characterise the magnetic ground state of beta-Mn at mK temperatures using the WISH diffractometer. It has been claimed for many years that geometric frustration of Mn atoms on the beta-Mn hyperkagome lattice impedes the formation of a long-range ordered state at low temperatures, despite strong spin-correlations from room temperature which indicate large exchange interactions. However, and astonishingly, this claim has never been checked directly with neutron powder diffraction at mK temperatures. Recent muon measurements see some sort of dynamical cross-over and around 700 mK, but heat capacity measurements see no sign of a phase transition at low temperatures. This experiment will either confirm beta-Mn as a strongly correlated spin-liquid, or else enable the characterisation of the long-range ordered ground state if it exists.

Principal Investigator: Dr Ross Stewart
Experimenter: Dr Joe Paddison
Experimenter: Dr Oleg Petrenko
Local Contact: Dr Pascal Manuel

DOI: 10.5286/ISIS.E.RB2010621

ISIS Experiment Number: RB2010621

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 Ross Stewart et al; (2020): The magnetic ground state of the elemental spin-liquid candidate beta-Mn, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010621

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