Spin-gapless van der Waals heterostructure for spin gating through magnetic injection devices

Area of Science:

• Condensed Matter Physics
• Materials Science
• Nanotechnology

Background:

• Spin-gapless semiconductors (SGSs) are advanced magnetic materials with tunable band structures.
• Their sensitivity to external stimuli offers potential for high-speed, low-energy spintronics.
• Janus MXene materials present unique asymmetric surface properties for novel device architectures.

Purpose of the Study:

• To investigate the electronic structure and magnetic properties of Cr2NOF/2DH semiconductor heterostructures.
• To explore the design of SGS structures through bilayer engineering and magnetic injection.
• To understand the transport mechanisms in van der Waals heterojunctions for spintronic applications.

Main Methods:

• First-principles calculations were employed to systematically study heterostructures.
• Analysis focused on electronic band structure, Curie temperature, and magnetism.
• Transport mechanisms in Cr2NOF/2DH van der Waals heterojunctions were investigated.

Main Results:

• Achieved 100% spin-filtering efficiency in Cr2NOF/2DH van der Waals heterojunction spintronic devices.
• Demonstrated successful spin gating via magnetic injection.
• Observed controllable optimization of device functions through heterojunction design.

Conclusions:

• The study provides a theoretical foundation for designing high-efficiency, low-power MXene van der Waals heterojunction spintronic devices.
• The developed heterostructures exhibit significant potential for advanced spintronic applications.
• The findings pave the way for novel magnetic semiconductor device functionalities.