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arXiv · 1604.06575

Swift thermal steering of domain walls in ferromagnetic MnBi stripes

Alexander Sukhov·Levan Chotorlishvili·Arthur Ernst·Xabier Zubizarreta·Sergey Ostanin·Ingrid Mertig·Eberhard K. U. Gross·Jamal Berakdar
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Abstract

We predict a fast domain wall (DW) motion induced by a thermal gradient across a nanoscopic ferromagnetic stripe of MnBi. The driving mechanism is an exchange torque fueled by magnon accumulation at the DWs. Depending on the thickness of the sample, both hot-to-cold and cold-to-hot DW motion directions are possible. The finding unveils an energy efficient way to manipulate DWs as an essential element in magnetic information processing such as racetrack memory.

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Alexander Sukhov, Levan Chotorlishvili, Arthur Ernst, Xabier Zubizarreta, Sergey Ostanin, Ingrid Mertig, Eberhard K. U. Gross, Jamal Berakdar. 2016-04-22. Swift thermal steering of domain walls in ferromagnetic MnBi stripes. https://doi.org/10.1038/srep24411

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