Symmetry-Related Higher-Order Phonon Anharmonicity in the 2D Altermagnetic Semiconductor V2Se2O
Altermagnets (AM) enable spin-split electronic structures without strong spin–orbit coupling (SOC), providing a clean platform for investigating intrinsic lattice anharmonicity in spintronic materials. Monolayer V2Se2O exhibits pronounced nonrelativistic spin splitting, while its band structure remains nearly unchang...