ISIS Neutron and Muon Source Data Journal

Probing the superconducting ground state of on non-centrosymmetric Ising superconductor 4H-NbSe2

Abstract: This muon spin rotation (µSR) proposal aims to investigate the unconventional superconducting properties of the non-centrosymmetric superconductor 4H-NbSe2, which exhibits superconductivity at a critical temperature (Tc) of 6.21 K. Temperature-dependent magnetization and resistivity measurements have revealed a significantly higher upper critical field (Hc2) for in-plane fields (32.9 T) compared to out-of-plane fields (5.77 mT), suggesting the possibility of Ising superconductivity in this compound. First-principles calculations further support this notion by confirming a similar electronic structure and spin-orbit coupling strength as the monolayer polymorph. Given the challenges associated with local measurements in monolayers and the existing ambiguity regarding the superconducting ground state (spin-triplet vs. Ising), bulk 4H-NbSe2 presents a unique opportunity to explore the superconducting ground state through µSR for this potential Ising superconductor.

Principal Investigator: Professor Ravi P Singh
Experimenter: Miss Priya Mishra
Experimenter: Ms Tarushi Agarwal
Experimenter: Ms Poulami Manna
Experimenter: Dr Adrian Hillier
Local Contact: Dr Rhea Stewart

DOI: 10.5286/ISIS.E.RB2510230

ISIS Experiment Number: RB2510230

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 Ravi P Singh et al; (2025): Probing the superconducting ground state of on non-centrosymmetric Ising superconductor 4H-NbSe2, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2510230

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