Muon spectroscopy investigation of anomalous dynamic magnetism in NiI\(_2\)

We present the results of muon-spin relaxation (\(\mu^{+}\)SR) measurements of the van der Waals magnet NiI\(_2\), which probe magnetic phase transitions at \(T_{\mathrm{N1}}=73\)K and \(T_{\mathrm{N2}}=60\)K. Supporting density functional theory (DFT) calculations allow the determination of a singl...

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Bibliographic Details
Published in:arXiv.org 2024-07
Main Authors: Breeze, T L, Huddart, B M, Hernández-Melían, A, Bentley, N P, Mayoh, D A, Wood, G D A, Balakrishnan, G, Wilkinson, J, Pratt, F L, Clark, S J, Lancaster, T
Format: Article
Language:English
Subjects:
Density functional theory
Magnetic structure
Muon spin relaxation
Phase transitions
Spin dynamics
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Summary:We present the results of muon-spin relaxation (\(\mu^{+}\)SR) measurements of the van der Waals magnet NiI\(_2\), which probe magnetic phase transitions at \(T_{\mathrm{N1}}=73\)K and \(T_{\mathrm{N2}}=60\)K. Supporting density functional theory (DFT) calculations allow the determination of a single muon stopping site whose magnetic environment is consistent with the proposed ground-state magnetic structure. \(\mu^{+}\)SR measurements of the dynamics reveal behavior consistent with spin-wave excitations below \(T_{\mathrm{N2}}\), with an additional contribution from a nonmagnetic component of the material. In the region \(T_{\mathrm{N1}}
ISSN:2331-8422