ISIS Neutron and Muon Source Data Journal

Studying the helimagnetic order and precursor phenomena in MnSi under pressure

Abstract: The archetype chiral system MnSi belongs to the family of non-centrosymmetric cubic helimagnets where a helimagnetic ordering exists below the critical temperature of 29 K. This helimagnetic ordering is preceeded by a precursor region where SANS shows isotropic diffuse scattering. Under field, Skyrmion lattices, which are an exotic magnetic ordering is stabilized in a region just below the critical temperature. Neutron diffraction studies have shown that the helical order is suppressed for pressures exceeding a critical pressure of 14 kbar. For higher pressures, a non-fermi liquid phase is observed in which the scattering is diffuse and maximum at the [110] crystallographic directions. We propose to study MnSi with SANS under pressure to monitor the evolution of both the helimagnetic order and the precursor phenomena. in addition, we wish to study the phase diagram under magnetic fields.

Principal Investigator: Professor Katia Pappas
Experimenter: Dr Lars Bannenberg
Experimenter: Dr Eddy Lelievre-Berna
Local Contact: Dr Robert Dalgliesh
Experimenter: Dr R Sadykov
Experimenter: Dr Ravil Sadykov

DOI: 10.5286/ISIS.E.RB1869002

ISIS Experiment Number: RB1869002

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 Katia Pappas et al; (2017): Studying the helimagnetic order and precursor phenomena in MnSi under pressure, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1869002

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