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Updated: Jan 14, 2026
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Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
Published on: June 28, 2018
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Spin-Polarized Lasing via Ferromagnetic Spin Filtering in Hybrid Perovskites
Penghao Li1,2, Yu Xu1,2, Xinyu Dong1,2
1Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Journal of the American Chemical Society
|October 25, 2025
Summary
Researchers developed a new method for spin-polarized lasers using ferromagnetic spin filtering in perovskites. This approach enables magnetic-field control of spin-polarized lasing, overcoming limitations of the weak Zeeman effect in these materials.
Area of Science:
- Materials Science
- Optoelectronics
- Spintronics
Background:
- Metal halide perovskites show potential for spin-polarized lasers.
- The weak Zeeman effect in perovskites hinders magnetic-field control of spin polarization.
Purpose of the Study:
- To introduce a ferromagnetic spin filtering effect for spin-polarized lasing in perovskites.
- To achieve magnetic-field induction and manipulation of spin-polarized lasing.
Main Methods:
- Designed a composite of ferromagnetic Fe3O4 nanoparticles and organic-inorganic hybrid perovskite.
- Utilized the Fe3O4 nanoparticles to selectively capture spin-polarized electrons under a magnetic field.
- Exploited composition-tailored bandgaps for wavelength tunability.
Main Results:
- Achieved effective spin polarization for lasing through ferromagnetic spin filtering.
- Demonstrated magnetic-field control over the chirality and circular polarization degree of lasing.
- Realized wavelength-tunable spin-polarized lasers.
Conclusions:
- Established a ferromagnetic spin filtering strategy for perovskite-based spin-polarized lasers.
- Overcame the limitations of the weak Zeeman effect for magnetic manipulation.
- Paved the way for advanced spintronic laser applications.
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