Long-range odd triplet superconductivity in superconductor-ferromagnet structures with Néel walls

Abstract

We consider a multidomain superconductor/ferromagnet (SF) structure with an in-plane magnetization, assuming that the neighboring domains are separated by the Neel domain walls. We show that an odd triplet long-range component arises in the domain walls and spreads into domains over a long distance of the order \xi_T = \sqrt{D/2\pi T} (in the dirty limit). The density of states variation in the domains due to this component changes over distances of the order \xi_T and turns to zero in the middle of domains if the magnetization rotates in the same direction in all domain walls.