Spintronics: Large‐Spin‐Gap Nodal‐Line Half‐Metal and High‐Temperature Ferromagnetic Semiconductor in Cr 2 X 3 (X=O,S,Se) Monolayers (Adv. Electron. Mater. 1/2020)

In article number 1900490, Fang-Ping Ouyang, Xiang Xiong, and co-workers propose a family of stable 2D honeycomb Kagome Cr2X3 (X=O,S,Se) monolayers through first-principles calculations. Planar Cr2S3 and Cr2Se3 are ferromagnetic half-metals with mirror symmetry protected nodal lines for spin-down channels, while buckled Cr2O3 layers are ferromagnetic semiconductors with large out-of-plane magnetocrystalline anisotropy energy (MAE), and predicted Curie temperatures of 332 K under moderate biaxial tensile strain. These properties make such materials suitable for novel spintronic devices and exotic quantum applications.