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Updated: Oct 15, 2025
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Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
Published on: December 3, 2013
5.9K
Magnon-phonon hybridization in 2D antiferromagnet MnPSe3
Thuc T Mai1, Kevin F Garrity2, Amber McCreary1
1Nanoscale Device Characterization Division, Physical Measurement Laboratory, NIST, Gaithersburg, MD 20899, USA.
Science Advances
|October 29, 2021
Summary
This study reveals strong hybridization between magnetic excitations (magnons) and lattice vibrations (phonons) in 2D van der Waals materials. These magnon-phonon interactions are directly observed using magneto-Raman spectroscopy in MnPSe3.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnetism
Background:
- Van der Waals (vdW) materials, especially in the 2D limit, are crucial for exploring fundamental magnetic phenomena.
- Understanding magnetic excitations and their interactions is key for novel electronic applications.
Purpose of the Study:
- To investigate the hybridization of magnetic excitations with lattice vibrations in magnetic vdW materials.
- To explore the temperature dependence of these interactions near the magnetic transition.
Main Methods:
- Temperature-dependent magneto-Raman spectroscopy was employed to study magnetic excitations.
- First-principles calculations were used to analyze phonon and magnon spectra.
- A model of discrete level-continuum interaction was developed.
Main Results:
- Hybridization between two-magnon excitations and two phonons was identified in manganese phosphorus triselenide (MnPSe3).
- Observed avoided crossing in phonon frequencies and decreased lifetimes near the magnetic transition.
- Strong hybridization between phonons and the two-magnon continuum was confirmed.
Conclusions:
- Magnon-phonon interactions can be directly observed via Raman scattering in 2D magnetic materials.
- This work provides significant insights into these interactions in vdW systems.
- The findings pave the way for manipulating these interactions in future devices.
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