Competing Antiferromagnetic Phases in Multiferroic Materials
Published:Dec 30, 2025 00:02
•1 min read
•ArXiv
Analysis
This paper identifies a family of multiferroic materials (wurtzite MnX) that could be used to create electrically controllable spin-based devices. The research highlights the potential of these materials for altermagnetic spintronics, where spin splitting can be controlled by ferroelectric polarization. The discovery of a g-wave altermagnetic state and the ability to reverse spin splitting through polarization switching are significant advancements.
Key Takeaways
- •Identifies wurtzite MnX as a family of multiferroic materials with competing AFM phases.
- •Demonstrates the potential for electric-field control of altermagnetic electronic structure.
- •Highlights the possibility of creating electrically controllable spin-based devices.
- •Shows that Cr doping can induce a g-wave altermagnetic state with reversible spin splitting.
Reference
“Cr doping drives a transition to an A-type AFM phase that breaks Kramers spin degeneracy and realizes a g-wave altermagnetic state with large nonrelativistic spin splitting near the Fermi level. Importantly, this spin splitting can be deterministically reversed by polarization switching, enabling electric-field control of altermagnetic electronic structure without reorienting the Neel vector or relying on spin-orbit coupling.”