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Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
Magnetization in Nonmagnetic Heterobilayers Induced by Linearly Polarized Light
Yangyang Feng1, Kaiying Dou1, Zhonglin He1
1School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Shandanan Street 27, Jinan250100, China.
Nano Letters
|August 5, 2026
Summary
Researchers developed a new method to create magnetization in nonmagnetic materials using linearly polarized light. This light-spin interaction leverages carrier dynamics near van Hove singularities for novel spintronic applications.
Area of Science:
- Condensed matter physics
- Materials science
- Spintronics
Background:
- Light-spin interactions are crucial for fundamental physics and applications.
- Inducing magnetization in nonmagnetic materials with light remains a significant challenge.
Purpose of the Study:
- To propose and confirm a novel mechanism for generating light-induced magnetization in nonmagnetic van der Waals heterobilayers.
- To explore the interplay between light-driven carrier dynamics and electronic instabilities.
Main Methods:
- First-principles calculations
- Real-time time-dependent density functional theory (TDDFT)
- Theoretical modeling of light-matter interactions
Main Results:
- A novel mechanism for light-induced magnetization in nonmagnetic van der Waals heterobilayers was proposed.
- The mechanism relies on the synergistic interplay between nonequilibrium carrier dynamics and van Hove singularities.
- Ultrafast linearly polarized light induces spin polarization via spin-orbit coupling during carrier relaxation.
- The mechanism was experimentally confirmed in the InS/GaSe heterobilayer.
Conclusions:
- This study presents a new paradigm for generating magnetization in nonmagnetic materials using light.
- The findings open new avenues for research in light-spin interactions and spintronics.
- Potential applications in ultrafast optical switching and data storage.
Keywords:
first-principlesmagnetizationnonmagnetic heterobilayerreal-time density functional theoryvan
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