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Optically Induced Spin Electromotive Force in a Ferromagnetic-Semiconductor Quantum Well Structure
Igor V Rozhansky1, Ina V Kalitukha1, Grigorii S Dimitriev1
1Ioffe Institute, St. Petersburg 194021, Russia.
Nano Letters
|May 1, 2023
Summary
Researchers developed a new method to study spin-dependent transport in hybrid ferromagnetic-semiconductor structures. This technique allows for nanometer-scale resolution of dynamic proximity effects, advancing spintronics applications.
Area of Science:
- Spintronics
- Condensed Matter Physics
- Materials Science
Background:
- Hybrid structures combining ferromagnetic (FM) and semiconductor materials are crucial for spintronics.
- Understanding spin-dependent transport in these materials is key to developing new electronic devices.
Purpose of the Study:
- To develop a systematic approach for studying spin-dependent transport in GaMnAs/GaAs/InGaAs quantum well (QW) hybrid structures.
- To investigate the dynamic ferromagnetic (FM) proximity effect on a nanometer scale.
Main Methods:
- Utilized a hybrid structure with a few-nanometer-thick GaAs barrier.
- Employed a combination of spin electromotive force measurements and photoluminescence detection.
Main Results:
- Demonstrated a powerful tool for studying hybrid structure properties.
- Achieved nanometer-scale resolution of the dynamic FM proximity effect.
- The developed method is generalizable to other systems, including 2D van der Waals materials.
Conclusions:
- The combined spin electromotive force and photoluminescence detection method is effective for analyzing hybrid spintronic structures.
- This approach enables detailed study of nanoscale spin dynamics and proximity effects.
- The technique has broad applicability for emerging materials in spintronics.
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