Finite-momentum superconductivity with singlet-triplet mixing in an altermagnetic metal: A pairing instability analysis
The study investigates pairing instability in an altermagnetic metal driven by attractive nearest-neighbor interactions. It finds that spin-splitting from altermagnetism causes finite-momentum pairing between unlike spins across multiple channels, leading to a superconducting state with a multi-component order parameter featuring singlet-triplet mixing.