Exploration of long-range spin-triplet correlations in superconductor/ferromagnetic hybrid systems

Since the prediction of long-range spin-triplet correlations (LRTCs) in superconductor/ferromagnet (S/F) systems,[1] their realization has been investigated by many groups. From F-N bilayers to intrinsic generation of spin-triplet through domain walls, there is wide interest in observing a signal at ranges beyond the tens of $nm$ observed in earlier work.[2] In this work, we examine the propagation of LRTCs extrinsically generated through noncollinear magnetization, at long $(100nm)$ length scales. We will report on our recent progress. \\ $[1]$ A.F. Volkov, F.S. Bergeret and K.B. Efetov, Phys. Rev. Lett., \textbf{90}, 117006 (2003).\\ $[2]$ T.S. Khaire, M.A. Khasawneh, W.P.Pratt, Jr, and N.O. Birge, Phys. Rev. Lett. \textbf{104}, 137002 (2010).