ISIS Neutron and Muon Source Data Journal

Searching for chiral bobbers in B20 FeGe epilayers

Abstract: Chiral magnetism in non-centrosymmetric systems that have a strong Dzyaloshinskii-Moriya interaction is a burgeoning field, with chiral skyrmions attracting enormous interest. These form flux tubes along the direction of an applied field and are 2-dimensional topological defects. The real space Berry phases associated with their topology yield a fascinating emergent electrodynamics. Here we will seek the newly predicted 3-dimensional toplogical structures, called chiral bobbers [PRL 115, 117201], which are the residues at the surfaces of a snapped skyrmion string, and feature chiral Bloch points that must act as monopoles of the emergent Berry phase flux. This will be done by extending our previous work on PolRef on spin helices in B20-ordered FeGe epilayers to thicker films, and using the magnetic depth-profiling capabilities of the PNR technique to seek these surface states.

Public release date: 11 March 2019

Principal Investigator: Professor Christopher Marrows
Experimenter: Mr Jamie Massey
Experimenter: Dr Katharina Zeissler
Experimenter: Dr Timothy Charlton
Experimenter: Mr Charles Spencer
Experimenter: Professor Sean Langridge
Experimenter: Dr Christy Kinane

DOI: 10.5286/ISIS.E.73945238

Parent DOI: 10.5286/ISIS.E.RB1610340

ISIS Experiment Number: RB1610340

Part Number: 1

Date of Experiment: 04 March 2016

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 Christopher Marrows et al; (2016): Searching for chiral bobbers in B20 FeGe epilayers, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.73945238