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.
Original language | English |
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Article number | 24411 |
Journal | Scientific Reports |
Volume | 6 |
DOIs | |
State | Published - 14 Apr 2016 |
Externally published | Yes |
Bibliographical note
Funding Information:This work is supported by the Deutsche Forschungsgemeinschaft under grants BE 2161/5-1, ER 340/5-2, ME 1153/15-2 and by the Joint Initiative for Research and Innovation within the Fraunhofer and Max Planck cooperation program.