  Scattering of spin-up and spin-down electrons while passing through a
ferromagnetic domain wall leads to an additional resistance for transport
current, usually observed prominently in constricted magnetic structures. In
this report, we use the resistance of the domain wall as a probe to find
indirect signatures of the theoretically predicted spin-singlet supercurrent to
spin-triplet supercurrent conversion effect of ferromagnetic domain walls. Here
we examine the domain wall induced resistance in Ni stripe in a bilayer Ni/Nb
geometry in the normal state and in the superconducting state of Nb. By making
a 6um wide gap in the top Nb layer we routed the transport current through the
Ni layer in the normal state and in the superconducting state of Nb. In the
normal state of Nb, in-field transport measurements showed a clear domain wall
magneto-resistance (DWMR) peak near the coercive field, where the domain wall
density is expected to be maximum. Interestingly, however, below the
superconducting transition temperature of Nb, the DWMR peak of the Ni layer
showed a sharp drop in the field range where the number of domain walls becomes
maximum. This observation may be a possible signature of magnetic domain wall
induced spin-triplet correlations in the Ni layer due to the direct injection
of spin-singlet Cooper pairs from Nb into the magnetic domain walls.
