Pairing correlations in quasi-2D ferromagnet/triplet-superconductor systems

摘要

The proximity effects in quasi-2D clean ferromagnet/triplet-superconductor systems are studied within the framework of the quasiclassical Eilenberger theory. Two typical even-frequency p-wave states are assumed for the bulk superconductor. The pairing correlations are classified according to their symmetry properties with respect to frequency, spin, and momentum. Selection rule for induced pairing states is obtained. We show that the long-ranged equal-spin pairing correlations may be generated in the ferromagnetic region even without the help of magnetic inhomogeneity. We study spatial dependence of the correlation functions, and discuss the characteristic damping properties. In particular, the proximity effects are found to be strongly dependent on the direction of the magnetization; such anisotropic properties may lead to various device applications.