We experimentally observe that D, the strength of the Dzyaloshinskii–Moriya interaction (DMI), is correlated with the difference of work function W of Co and nonmagnetic material X in Pt/Co/X trilayer system. The spin–orbit-scattering-mediated spin–chiral effect may plays leading role in this system, and this phenomena may be affected by work function difference which may be linked to electrostatic potential that may affect the scattering potential at the interface. Such correlation with the intrinsic material parameter provides a guideline for material selection to engineer the DMI and helps control properties for applications of chiral objects such as magnetic skyrmion.
- Yong-Keun Park
- Dae-Yun Kim
- Sug-Bong Choe
