Near-room-temperature easy-plane p-orbital ferromagnetism in half-metallic monolayer La2CO2
Yang Ou1, Feng Tian2, Yi Yang1
1School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, P. R. China. yangzhou1998@126.com.
Abstract:
We propose monolayer La2CO2 as a thermodynamically stable MXene exhibiting p-orbital itinerant ferromagnetism. Driven by the Stoner mechanism, this half-metal achieves 100% spin polarization. Specifically, the band inversion within the carbon sublattice is induced by La d-f orbital hybridization, resulting in a near-room-temperature Curie point (283 K) and robust easy-plane anisotropy. With a negligible in-plane anisotropy barrier (<0.02 meV per atom), the material exhibits ultralow damping and minimal pinning effects. These exceptional physical properties render monolayer La2CO2 a highly suitable candidate for advanced spintronic applications.
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