Direction-selective triplet pairing and spin-edge locking in altermagnetic metals
The study investigates superconductivity in two-dimensional altermagnetic metals using a self-consistent framework involving d-wave pairing and magnetic exchange interactions. It finds that momentum-dependent spin splitting suppresses singlet pairing and stabilizes highly anisotropic equal-spin triplet order, leading to nearly dispersionless Majorana boundary states with characteristic spin polarization dictated by the material's symmetry.