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Updated: Feb 7, 2026
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Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors
Published on: November 7, 2016
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Electrically induced 2D half-metallic antiferromagnets and spin field effect transistors
Shi-Jing Gong1,2, Cheng Gong3,4, Yu-Yun Sun5
1Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Engineering, East China Normal University, Shanghai 200062, China; sjgong@ee.ecnu.edu.cn cgong@berkeley.edu xiang@berkeley.edu.
Summary
We demonstrate electric field-induced half metallicity in 2D van der Waals crystals. This breakthrough enables 100% spin-polarized currents for advanced spintronics applications.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Engineering electronic band structures unlocks novel material properties.
- Half metallicity, crucial for spintronics, is challenging to achieve in thin films due to spin-mixed edge states.
Purpose of the Study:
- To predict and demonstrate electric field-induced half metallicity in 2D materials.
- To explore the potential for 100% spin-polarized currents in van der Waals crystals.
Main Methods:
- Density functional theory calculations were employed.
- Investigated bilayer A-type antiferromagnetic van der Waals crystals, specifically vanadium diselenide.
- Analyzed the effect of vertical electric fields on electronic band structures.
Main Results:
- Predicted and confirmed electric field-induced half metallicity in bilayer VSe2.
- Demonstrated that electric fields close specific spin-polarized gaps while opening others.
- Showcased the feasibility of achieving half metallicity in A-type antiferromagnetic bilayers.
Conclusions:
- Vertical electric fields are a viable method to induce half metallicity in 2D materials.
- This discovery offers a pathway to 2D half metals for efficient antiferromagnetic spintronics.
- Opens opportunities for nanoscale information processing and storage devices.
Keywords:
2D magnetism2D materialsantiferromagnetic spintronicshalf metallicityspin field effect transistorMore Related Videos
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