Electronic and spin transport properties of unconventional p-wave magnets

Unconventional compensated magnets with an odd-parity or p-wave spin polarization protected by a composite time-reversal translation symmetry have been proposed in the wake of even-parity altermagnets. To facilitate the experimental discovery and applications of these p-wave magnets as well as to clarify their relation to other magnets with odd-parity spin-polarized bands, we propose an effective analytical model. We illustrate the effective model by evaluating the tunneling conductance in junctions with p-wave magnets, revealing a large tunneling magnetoresistance, spin filtering, and anisotropic bulk spin conductivity beyond linear response despite the absence of a net magnetization. Transport properties of junctions consisting of p-wave magnets and superconductors exemplified by the transverse spin conductance are also discussed. Our results show that unconventional p-wave magnets offer several useful functionalities, broadening the material selection for spintronics devices.