ISIS Neutron and Muon Source Data Journal

Origin of the topological/unconventional Hall effect in Quaternary Heusler alloy NiCoMnAl.

Abstract: Non-trivial spin configurations such as skyrmions and anti-skyrmions have gained attention owing to their importance from fundamental and technological perspective. Heusler alloy is one such family of compound with promising characteristics for exploring and controlling topological phases. Albeit of existing literature on topologically spin structures in full and inverse Heusler compound, the subgroup of quaternary Heusler alloy remains unexplored. In this study, the novel quaternary Heusler alloy NiCoMnAl is interesting as the obtained saturation moment deviates from the theoretical prediction. The ac susceptibility measurement also reveals the presence of non-coplanar (NPL) spin textures before the field polarized phase. The transverse resistivity measurements reflect the presence of non-trivial spin arrangement where an additional component [i.e. topological Hall resistivity (THR)/unconventional Hall resistivity (UCHR)] with anomalous Hall resistivity (AHR) arises in a temperature range of 2-380 K, with a considerable value of 2.5µ? cm at 300 K. We propose to investigate the magnetic spin configuration of polycrystalline NiCoMnAl in zero-field as well as in presence of external applied magnetic fields in the wide temperature range to confirm the formation of topologically protected textures and skyrmion lattice formation by SANS experiment.

Principal Investigator: Professor Indranil Das
Experimenter: Professor Milan Sanyal
Experimenter: Professor Sean Langridge
Experimenter: Mr Afsar Ahmed
Experimenter: Dr Devashi Adroja
Local Contact: Dr Diego Alba Venero

DOI: 10.5286/ISIS.E.RB2410112

ISIS Experiment Number: RB2410112

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Indranil Das et al; (2025): Origin of the topological/unconventional Hall effect in Quaternary Heusler alloy NiCoMnAl., STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2410112

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