ISIS Neutron and Muon Source Data Journal

Magnetic Field Study on the Tc-coupled Spin Excitation in Spin-triplet Superconductor Candidate UTe2

Abstract: UTe2 has drawn a lot of attention among the superconductivity (SC) community recently for the promising secondary evidence of spin-triplet Cooper pairing shown in this system through temperature-independent NMR Knight shift, the highly anisotropic and unusually large upper critical field, power-law behavior of the specific heat, and ferromagnetic spin fluctuation hinted by the magnetic susceptibility. Inelastic neutron scattering can provide information on the pairing mechanism by probing the low energy excitation due to the ferromagnetic spin fluctuations. Our previous experiments at CNCS on co-aligned UTe2 sample in its 0KL and HK0 plane showed rod-like magnetic excitations at Brillouin zone boundary which develop a spin gap and a spin resonance upon entering the SC state. To further investigate the cause of the spin resonance, we propose to study magnetic field effect on this excitation.

Public release date: 16 March 2027

Principal Investigator: Dr Chunruo Duan
Local Contact: Dr Ross Stewart
Experimenter: Professor Pengcheng Dai

DOI: 10.5286/ISIS.E.RB2310133-2

Parent DOI: 10.5286/ISIS.E.RB2310133

ISIS Experiment Number: RB2310133

Part Number: 2

Date of Experiment: 12 March 2024

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:
Dr Chunruo Duan et al; (2024): Magnetic Field Study on the Tc-coupled Spin Excitation in Spin-triplet Superconductor Candidate UTe2, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2310133-2

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