Two-dimensional C₁₂Mn₂/C₁₂Cr₂ as a room-temperature half metal/antiferromagnetic semiconductor: a systematic study

Area of Science:

• Condensed Matter Physics
• Materials Science
• Quantum Chemistry

Background:

• Two-dimensional (2D) materials offer unique properties for advanced electronic applications.
• Half-metallic ferromagnetism in 2D materials is crucial for spintronics.
• Graphyne-based materials are emerging as promising candidates for novel electronic devices.

Purpose of the Study:

• To investigate the potential of 2D single-layer C₁₂Mn₂ and C₁₂Cr₂ as functional materials.
• To explore their magnetic and electronic properties using first-principle calculations.
• To assess their stability for potential spintronics applications.

Main Methods:

• First-principle calculations were employed to study the electronic and magnetic properties.
• A systematic bottom-up approach was used to investigate atomic configurations on graphyne.
• Structural and magnetic stability were analyzed at room temperature.

Main Results:

• 2D single-layer C₁₂Mn₂ was predicted to be a ferromagnetic half metal.
• 2D single-layer C₁₂Cr₂ was predicted to be an antiferromagnetic semiconductor.
• High Curie and Néel temperatures were calculated, suggesting stable room-temperature magnetism.

Conclusions:

• 2D C₁₂Mn₂ demonstrates excellent potential as a material for spintronics due to its half-metallic ferromagnetism and spin filtering capabilities.
• 2D C₁₂Cr₂ exhibits stable antiferromagnetism, opening possibilities for other spin-based applications.
• These findings highlight the promise of engineered 2D materials for next-generation spintronic devices.