ISIS Neutron and Muon Source Data Journal

Neutron diffraction study of exotic magnetic order in the novel superconductor RbEuFe4As4

Abstract: We propose to study magnetic structure of the novel iron-based superconductor RbEuFe4As4. This peculiar material exhibit superconductivity with a rather high Tc~36K and without any antiferromagnetic ordering of Fe magnetic moments unlike in the most common and well studied ?122? compounds. Surprisingly, bulk magnetisation measurements have provided the evidence of ferromagnetic ordering of the Eu2+ spins below Tm~15K. The first neutron diffraction measurement claims that magnetic Eu2+ sublattice has three-dimensional helical antiferromagnetic order. Moreover, recent theoretical work suggests that this helical magnetic structure appears due to the presence of the superconductivity. In order to check this theoretical prediction, we propose to perform a systematic temperature-dependent study of the magnetic structure in this material using single-crystal neutron diffraction at SXD.

Principal Investigator: Dr Timur Kim
Experimenter: Dr Daniil Yevtushynsky
Experimenter: Dr Robin Perry
Local Contact: Dr Matthias Gutmann

DOI: 10.5286/ISIS.E.RB2010244

ISIS Experiment Number: RB2010244

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 Timur Kim et al; (2020): Neutron diffraction study of exotic magnetic order in the novel superconductor RbEuFe4As4 , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010244

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