Direct observation of quadruple spin-texture locking in a 2D d-wave altermagnet
This study provides the first atomic-scale evidence of spin-lattice locking in the 2D d-wave altermagnet RbV2Se2O by utilizing spin-polarized quasiparticle interference mapping to reveal a unified picture of quadruple spin-texture locking involving spin-lattice, spin-momentum, spin-scattering, and a newly identified spin-stripe locking mechanism driven by a spin-density-wave moiré pattern.