Abstract
We employ a Hamiltonian method to study the equal-spin pairing tripletJosephson junction with different orbital symmetries of pair potentials. Boththe spin/charge supercurrent and possible spin accumulation at the interface ofthe junction are analyzed by means of the Keldysh Green’s function. It is foundthat a spontaneous angle-resolved spin accumulation can form at the junction’sinterface when the orbital symmetries of Cooper pairs in two triplet superconductorsare different, the physical origin is the combined effect of the different orbitalsymmetries and different spin states of Cooper pairs due to the misalignment of twod vectors in triplet leads. An abrupt current reversal effect induced by misalignment ofd vectors is observed and can survive in a strong interface barrier scattering because thezero-energy state appears at the interface of the junction. These properties of the p-waveJosephson junction may be helpful for identifying the order parameter symmetry.
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