ISIS Neutron and Muon Source Data Journal

Investigate the effective model in a Kitaev candidate material

Abstract: Recently, magnetic systems with significant anisotropic properties have garnered considerable interest. The renowned S = 1/2 Kitaev model proposes a route to achieve the quantum spin liquid ground state and unique anyonic excitations through bond-dependent anisotropy. Thus, studying and realizing this model is important for exploring new quantum phases and advancing quantum computations. Recently, discussions on Kitaev physics have expanded to include the S=1 case, with predictions of reduced isotropic Heisenberg terms and the derivation of Kitaev terms from the strong SOC of ligand ions via super-exchange processes. These proposals potentially enrich the pool of Kitaev material candidates. NiI2, a van der Waals material, is a rare example of an S=1 magnet proposed to host Kitaev physics. Additionally, such systems with noncollinear magnetic structures and potential bond-dependent anisotropy contain rich physics, such as magnon decay and avoided decay due to strong magnon-magnon interactions. Furthermore, type-2 multiferroics near room temperature, along with magnetic control, make NiI2 a promising platform for creating faster and smaller memory devices. Investigations into the magnetic excitations of NiI2 are crucial to resolving these issues. Therefore, INS data is urgently required. We believe that research on NiI2 will significantly advance our understanding of the physics derived from the Kitaev models, particularly those involving higher spins.

Public release date: 25 March 2028

Principal Investigator: Professor Jinsheng Wen
Experimenter: Mr Bo Zhang
Experimenter: Mr Junbo Liao
Experimenter: Mr Hao Xu
Experimenter: Mr Shuai Dong
Experimenter: Dr Yanyan Shangguan
Local Contact: Dr Travis Williams
Experimenter: Mr ZHENTAO Huang
Experimenter: Dr Song Bao

DOI: 10.5286/ISIS.E.RB2420024-1

Parent DOI: 10.5286/ISIS.E.RB2420024

ISIS Experiment Number: RB2420024

Part Number: 1

Date of Experiment: 21 March 2025

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 Jinsheng Wen et al; (2025): Investigate the effective model in a Kitaev candidate material, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2420024-1

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