Marcel Franz
At low temperature, altermagnetic metals can naturally support spin-triplet superconducting phases with, effectively, independent condensates for spin-up and spin-down electrons. I will argue that such a state can be used to both generate and carry spin-polarized persistent currents that are of interest to spintronic applications. This conclusion applies to altermagnets that become intrinsically superconducting at low temperatures, but, remarkably, also to the case when an altermagnet is proximitized with a conventional spin-singlet s-wave superconductor.