ISIS Neutron and Muon Source Data Journal

Magnetic Structure of the Quasi-2D Heavy Fermion Metal CePtAs

Abstract: Heavy fermion systems, characterized by their tunable strong electronic correlations, exhibit a range of quantum phenomena including quantum critical points, metamagnetism, and unconventional superconductivity. Recent studies have highlighted the emergence of ferromagnetic (FM) quantum critical points, spin-triplet superconductivity, and two-dimensional van der Waals heavy fermion systems. CePtAs, a cerium-based heavy fermion compound with a hexagonal layered structure, displays antiferromagnetic ordering below 1 K and pronounced anisotropic electronic properties. Preliminary measurements indicate that the antiferromagnetic ground state of CePtAs can be tuned towards a FM phase under applied field and pressure, suggesting dominant FM interactions. To elucidate the magnetic structure of CePtAs, we propose single crystal neutron diffraction measurements using the SXD beamline, which will provide insights into its zero-field antiferromagnetic phase and field-induced FM state. This study aims to advance our understanding of the magnetic interactions and potential FM-driven superconductivity in heavy fermion systems.

Principal Investigator: Dr Yu Song
Experimenter: Miss Ruihan Chen
Experimenter: Mr Chun Han
Local Contact: Dr Silvia Capelli
Experimenter: Mr Jinyu Wu
Experimenter: Professor Michael Smidman
Experimenter: Mr Yincong Han

DOI: 10.5286/ISIS.E.RB2520445

ISIS Experiment Number: RB2520445

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 Yu Song et al; (2025): Magnetic Structure of the Quasi-2D Heavy Fermion Metal CePtAs, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2520445

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