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Updated: Sep 4, 2025
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Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets
Published on: August 18, 2023
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Mutual spin-phonon driving effects and phonon eigenvector renormalization in nickel (II) oxide
Qiyang Sun1, Bin Wei1,2, Yaokun Su3
1Department of Mechanical Engineering, University of California, Riverside, CA 92521.
Summary
Spin-phonon coupling influences acoustic phonon properties, revealing strong spin-lattice correlations in nickel oxide. This interaction affects spin and heat transport, with implications for novel electronic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Mechanics
Background:
- Spin-phonon coupling is crucial for spin and heat transport phenomena.
- The impact of spin-phonon coupling on acoustic phonon properties remains largely unexplored.
- Understanding these interactions is key to developing advanced electronic materials.
Purpose of the Study:
- To investigate the elusive effect of spin-phonon coupling on acoustic phonon properties.
- To identify and characterize spin-lattice correlations in magnetic materials.
- To elucidate the mechanisms behind anomalous phonon behavior in antiferromagnets.
Main Methods:
- Inelastic neutron scattering experiments were performed on nickel (II) oxide.
- First-principles calculations were employed to model the observed phenomena.
- Analysis focused on scattering spectral intensity and its dependence on momentum transfer and temperature.
Main Results:
- Anomalous scattering spectral intensity from acoustic phonons was observed in nickel (II) oxide.
- Strong spin-lattice correlations were identified, renormalizing acoustic phonon polarization.
- A magnetic scattering signature was detected, indicating spin precession driven by phonons.
- "Geometry-forbidden" scattering from transverse acoustic phonons suggests eigenvector renormalization.
Conclusions:
- The study demonstrates significant spin-phonon coupling affecting acoustic phonon dynamics.
- Observed phenomena are attributed to the coupling between phonons and local ionic magnetization, not magnetostriction.
- Findings provide new insights into spin-lattice interactions and their role in material properties.
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