Magnon-Driven Domain-Wall Motion with the Dzyaloshinskii-Moriya Interaction

Abstract

We study domain wall (DW) motion induced by spin waves (magnons) in the presence of Dzyaloshinskii-Moriya interaction (DMI). The DMI exerts a torque on the DW when spin waves pass through the DW, and this torque represents a linear momentum exchange between the spin wave and the DW. Unlike angular momentum exchange between the DW and spin waves, linear momentum exchange leads to a rotation of the DW plane rather than a linear motion. In the presence of an effective easy plane anisotropy, this DMI induced linear momentum transfer mechanism is significantly more efficient than angular momentum transfer in moving the DW.

References in corpus (2)

• Microscopic approach to current-driven domain wall dynamics
• Domain wall heat conductance in ferromagnetic wires

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