  Interfacial Dzyaloshinskii-Moriya interaction (DMI) has long been observed in
normal metal/ferromagnetic multilayers, enabling the formation of chiral domain
walls, skyrmions and other 2D antisymmetric spin textures confined within a
single ferromagnetic layer, while more recent works on interlayer DMI reveal
new pathways in realizing novel chiral 3D spin textures between two separate
layers.Here, we report on interlayer DMI between two orthogonally magnetized
ferromagnetic layers (CoFeB/Co) mediated by a Pt layer, and confirm the chiral
nature of the observed effective field of up to 37 Oe through asymmetric
hysteresis loops under in-plane field.We highlight the importance of
growth-induced in-plane symmetry breaking, resulting in a sizable interlayer
DMI and a universal characteristic vector through wedge deposition of the
samples.We further perform deterministic current-driven magnetization switching
in the perpendicularly magnetized Co layer utilizing solely the effective field
from the interlayer DMI.These results demonstrate the potential of interlayer
DMI in facilitating deterministic field-free switching in spin memory
applications.
