Generation of single skyrmions by picosecond magnetic field pulses
| Autor: | Changhoon Heo, Theo Rasing, Alireza Qaiumzadeh, Vegard Flovik, Ashis Kumar Nandy |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Condensed Matter - Materials Science Field (physics) Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Skyrmion Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences 02 engineering and technology Condensed Matter Physics 021001 nanoscience & nanotechnology 01 natural sciences Pulse (physics) Magnetic field Amplitude Ferromagnetism Spectroscopy of Solids and Interfaces Picosecond Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences ComputingMethodologies_DOCUMENTANDTEXTPROCESSING 010306 general physics 0210 nano-technology Den kondenserade materiens fysik Ultrashort pulse |
| Zdroj: | Physical Review B, 96, pp. 1-6 Physical Review B, 96, 1-6 |
| ISSN: | 2469-9950 |
| DOI: | 10.1103/PhysRevB.96.140411 |
| Popis: | We numerically demonstrate an ultrafast method to create $\textit{single}$ skyrmions in a $\textit{collinear}$ ferromagnetic sample by applying a picosecond (effective) magnetic field pulse in the presence of Dzyaloshinskii-Moriya interaction. For small samples the applied magnetic field pulse could be either spatially uniform or nonuniform while for large samples a nonuniform and localized field is more effective. We examine the phase diagram of pulse width and amplitude for the nucleation. Our finding could ultimately be used to design future skyrmion-based devices. 4.5 pages+Supplemental Material |
| Databáze: | OpenAIRE |
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