Figure 1: Structure and magnetic characterization of the superconducting spin valves.
From: Evidence for spin selectivity of triplet pairs in superconducting spin valves
(a) An illustration of a Py(8 nm)/Ho/Nb/Ho/Py(5 nm)/FeMn(5 nm) spin valve. The spin valves were cooled in a positive field to 20 K to obtain the magnetization versus in plane magnetic field loops (M–H loops): (b) M–H loop for a spin valve without any Ho layers; (c) M–H loop for a spin valve with 3-nm-thick layer of Ho on either side of Nb; and (d) M–H loop for a spin valve with a 5-nm-thick layer of Ho on either side of Nb. Arrows in b–d indicate the probable magnetic configuration of the Py layers in the spin valves.
