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arXiv · 1406.5997

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

Weiwei Wang·Maximilian Albert·Marijan Beg·Marc-Antonio Bisotti·Dmitri Chernyshenko·David Cortés-Ortuño·Ian Hawke·Hans Fangohr
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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.

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Weiwei Wang, Maximilian Albert, Marijan Beg, Marc-Antonio Bisotti, Dmitri Chernyshenko, David Cortés-Ortuño, Ian Hawke, Hans Fangohr. 2014-06-23. Magnon-Driven Domain-Wall Motion with the Dzyaloshinskii-Moriya Interaction. https://doi.org/10.1103/physrevlett.114.087203

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