Title: Magnetic droplet nucleation with homochiral Neel domain wall,
Abstract: We investigate the effect of the Dzyaloshinskii Moriya interaction (DMI) on
magnetic domain nucleation in a ferromagnetic thin film with perpendicular
magnetic anisotropy. We propose an extended droplet model to determine the
nucleation field as a function of the in-plane field. The model can explain the
experimentally observed nucleation in a CoNi microstrip with the interfacial
DMI. The results are also reproduced by micromagnetic simulation based on the
string model. The electrical measurement method proposed in this study can be
widely used to quantitatively determine the DMI energy density.