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Updated: Sep 19, 2025
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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Dynamical Simulation of Chiral-Induced Spin-Polarization and Magnetization
Peng-Yi Liu1, Tian-Yi Zhang1, Qing-Feng Sun1,2
1International Center for Quantum Materials, School of Physics, Peking University, Beijing, 100871, China.
The Journal of Physical Chemistry Letters
|June 17, 2025
Summary
Chirality in molecules can induce spin polarization and magnetization, even without traditional magnetic properties. This study presents a model explaining how charge polarization and chiral-induced spin selectivity (CISS) create these effects.
Area of Science:
- Condensed Matter Physics
- Quantum Chemistry
- Nanotechnology
Background:
- Chiral molecules exhibit unique spin-dependent transport (chiral-induced spin selectivity, CISS).
- Recent experiments demonstrate chirality can induce spin polarization and magnetization.
- This links molecular chirality to magnetism, with implications for biochemistry and nanomagnetics.
Purpose of the Study:
- To present a dynamical theoretical model explaining spin polarization and magnetization in chiral molecules.
- To elucidate the combined role of charge polarization and CISS in generating spin effects.
Main Methods:
- Developed a dynamical theoretical model.
- Simulated the time evolution of charge and spin polarization.
- Applied the model to scenarios with charge polarization induced by dispersion interaction, gate voltage, and molecular adsorption.
Main Results:
- The model successfully explains experimentally observed spin polarization and magnetization.
- Demonstrated how charge polarization, coupled with CISS, leads to induced spin polarization and magnetization.
- Provided a clear time evolution process for these phenomena.
Conclusions:
- The theoretical model offers a comprehensive framework for understanding chirality-induced magnetism.
- Highlights the significant connection between molecular chirality, charge polarization, and emergent magnetic properties.
- Supports the design of novel nanomagnetic devices and interpretation of biochemical processes.
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