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arXiv · 1304.2439

Instability of Walker Propagating Domain Wall in Magnetic Nanowires

B. Hu·X. R. Wang
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Abstract

Stability of the well-known Walker propagating domain wall (DW) solution of the Landau-Lifshitz-Gilbert equation is analytically investigated. Surprisingly, the Walker's rigid body propagating DW mode is not stable against the spin wave/wavepacket emission. In the low field region only stern spin waves are emitted while both stern and bow waves are generated under high fields. In a high enough field, but below the Walker breakdown field, the Walker solution could be convective/absolute unstable if the transverse magnetic anisotropy is larger than a critical value, corresponding to a significant modification of the DW profile and DW propagating speed.

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B. Hu, X. R. Wang. 2013-04-09. Instability of Walker Propagating Domain Wall in Magnetic Nanowires. https://doi.org/10.1103/physrevlett.111.027205

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