Symmetry-breaking-induced valley polarization and pure spin current in altermagnetic Co2MTe4 monolayers.
Altermagnets combine spontaneous spin splitting with antiferromagnetic coupling, making them a promising platform for spintronic devices. In this work, we demonstrate that the two-dimensional (2D) Co2MTe4 (M = Mo, W) monolayers are altermagnetic semiconductors with out-of-plane magnetic easy axes, whose unconventional...