Nature of Interfacial Dzyaloshinskii-Moriya Interactions in Graphene/Co/Pt(111) Multilayer Heterostructures

Interfacial potential gradient modulates Dzyaloshinskii-Moriya interaction in Pt/Co/metal multilayers

“…This discrepancy indeed questions how independent the two interfaces, i.e., Pt/Co and Co/M, can be considered and what their mutual influence is. Recent DFT calculations support the hypothesis that for more than 3 ML of Co (≈ 0.75 nm) the two Co interfaces of Pt/Co/M trilayers may be considered as independent [39]. Accordingly, the behavior of our trilayers is expected to be different from that estimated by Jia et al [14] for 1 ML Co, where the upper Co interface modifies the bottom Pt/Co interface.…”