ISIS Neutron and Muon Source Data Journal

Powder and single crystal neutron diffraction study on Weyl semimetal NdCuGa3

Abstract: Magnetic topological materials provide an important platform for realizing several exotic quantum phenomena, such as anomalous Hall effect (AHE), anomalous Nernst effect, and skyrmions, owing to the interplay between topology and magnetism. Antiferromagnetic (AFM) materials exhibit AHE due to the presence of nontrivial spin structures. NdCuGa3 crystallizes in a tetragonal structure with an AFM ground state (Néel temperature ~3.4 K). We observed a large AHE of ~1100 ?-1.cm-1 at 2 K. From magnetic studies, it exhibits AFM to metamagnetic to ferromagnetic transitions under applied magnetic field. Therefore, a knowledge of the ground state and in-field magnetic structures of NdCuGa3 by neutron diffraction is imperative to understand the magnetic phase transitions and origin of large AHE. These promising results suggest the possibility of spintronic devices based on antiferromagnets with tailored noncoplanar AFM to ferromagnetic spin configurations.

Public release date: 13 October 2026

Experimenter: Dr Subhajit Roychowdhury
Experimenter: Dr Premakumar Yanda
Local Contact: Dr Fabio Orlandi

DOI: 10.5286/ISIS.E.RB2320259-2

Parent DOI: 10.5286/ISIS.E.RB2320259

ISIS Experiment Number: RB2320259

Part Number: 2

Date of Experiment: 12 October 2023

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 Subhajit Roychowdhury et al; (2023): Powder and single crystal neutron diffraction study on Weyl semimetal NdCuGa3, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2320259-2

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