  Interfacial Dzyaloshinskii-Moriya interaction in ferromagnet/heavy metal
bilayers is recently of considerable interest as it offers an efficient control
of domain walls and the stabilization of magnetic skyrmions. However, its
effect on the performance of perpendicular spin transfer torque memory has not
been explored yet. We show based on numerical studies that the interfacial
Dzyaloshinskii-Moriya interaction decreases the thermal energy barrier while
increases the switching current. As high thermal energy barrier as well as low
switching current is required for the commercialization of spin torque memory,
our results suggest that the interfacial Dzyaloshinskii-Moriya interaction
should be minimized for spin torque memory applications.
