Two-dimensional fully-compensated Ferrimagnetism

Abstract

Antiferromagnetic spintronics has long been a subject of intense research interest, and the recent introduction of altermagnetism has further ignited enthusiasm in the field. However, fully-compensated ferrimagnetism, which exhibits band spin splitting but zero net magnetization, has yet to receive enough attention. Since the experimental preparation of two-dimensional (2D) magnetic van der Waals (vdW) materials in 2017, 2D magnetic materials, thanks to their super tunability, have quickly become an important playground for spintronics. Here, we extend the concept of fully-compensated ferrimagnetism (fFIM) to two dimensions and propose 2D \textit{filling-enforced} fFIM, demonstrate its stability and ease of manipulation, and present three feasible realization schemes with respective exemplary candidate materials. A simple model for 2D fully-compensated ferrimagnets (fFIMs) is developed. Further investigation of 2D fFIMs' physical properties reveals that they not only exhibit significant magneto-optical response but also show fully spin-polarized currents and the anomalous Hall effect in the half-metallic states, displaying characteristics previously almost exclusive to ferromagnetic materials, greatly broadening the research and application prospects of spintronic materials.

Phys. Rev. Lett. (2025); 7-page text + 7-page Supplemental Material

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Cited by in corpus (14)

• Spin-Polarized Antiferromagnetic Spintronics
• Lithium and Vanadium Intercalation into Bilayer V2Se2O: Ferrimagnetic-Ferroelastic Multiferroics and Anomalous and Spin Transport
• Ferroelectric Antiferromagnetic Lifting of Spin-Valley Degeneracy
• Spin-Selective Second-Order Topological Insulators Enabling Cornertronics in 2D Altermagnets
• Unconventional compensated magnetic material LaMn${}_2$SbO${}_6$
• Unlocking Doping Effects on Altermagnetism in MnTe: Emergence of Quasi-altermagnetism
• Magnetic-Field and Strain Engineering of Modulated Transverse Transport in Altermagnetic Topological Materials
• Electric-field induced half-metallicity in a two-dimensional ferromagnetic Janus VSSe bilayer
• Unified Magnetoelectric Mechanism for Spin Splitting in Magnets
• Quantum anomalous Hall conductivity in altermagnets under applied magnetic field
• Matter with apparent and hidden spin physics
• Electrically switchable non-relativistic Zeeman spin splittings in collinear antiferromagnets
• Ferroelectric switchable altermagnetic-like compensated ferrimagnets with charge ordering
• Electric-Field-induced Two-Dimensional Fully Compensated Ferrimagnetism and Emergent Transport Phenomena