Dzyaloshinskii–Moriya solitons in anisotropic ferromagnetic nanowires driven by magnetic field and spin-polarized current

Highlights: •Dzyaloshinskii–Moriya solitons are obtained in anisotropic ferromagnetic nanowires. •The phase diagram is given for types of solitons. •Dzyaloshinskii–Moriya interaction affects the internal structure distortion of solitons. •The roles of Dzyaloshinskii–Moriya interaction are opposite for solitons type I and type II. -- Abstract: We theoretically investigate the Dzyaloshinskii–Moriya solitons driven by the magnetic field and spin-polarized current in anisotropic ferromagnetic nanowires. The external field and Dzyaloshinskii–Moriya interaction determine the formation region of soliton solution and the corresponding phase diagram is given for different types of solitons. The Dzyaloshinskii–Moriya interaction affects the internal structure distortion of solitons which determines the soliton energy. Also, we obtain the critical value of Dzyaloshinskii–Moriya interaction for soliton formation. The roles of Dzyaloshinskii–Moriya interaction effect on the soliton energy are completely opposite for the solitons of type I and type II in ferromagnetic nanowires.