A new type of magnet called p-wave unconventional magnet is proposed, stimulated by the discovery of altermagnet. We study the tunneling conductance of p-wave unconventional magnet/superconductor junctions by adopting the effective Hamiltonian of p-wave unconventional magnets with time-reversal symmetry breaking, suggested (Hellenes et al. P-wave magnets, http://arxiv.org/abs/2309.016072024). The tunneling conductance shows an asymmetric behavior with respect to bias voltage in the helical p-wave superconductor junctions. It is caused by the missing of helical edge states contributing to the charge conductance owing to the momentum-dependent spin-split feature of the Fermi surface in p-wave unconventional magnets. In chiral d and p-wave superconductor junctions, the resulting spin-resolved tunneling conductance takes a different value for spin sectors due to the time-reversal symmetry breaking in superconductors. Our results qualitatively reproduce the results based on the simplified Hamiltonian (Maeda et al. J. Phys. Soc. Jpn. 93, 114703 2024), where only the odd function of the exchange coupling of p-wave unconventional magnets is taken into account, which gives the shift of the Fermi surface and preserves the time-reversal symmetry similar to the spin-orbit coupling.
