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Swift thermal steering of domain walls in ferromagnetic MnBi stripes.


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.

SUBMITTER: Sukhov A 

PROVIDER: S-EPMC4830975 | biostudies-literature |

REPOSITORIES: biostudies-literature

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