Skyrmion formation in nanodiscs using magnetic force microscopy tip
英文摘要：
In this manuscript we demonstrate the skyrmion formation in ultrathin nanodots using magnetic force microscopy tip. Submicron-size dots based on Pt/Co/Au multilayers hosting interfacial Dzyaloshiskii-Morya interaction were used in the experiments. We have found that the tip field generated by the magnetic tip significantly affects the magnetization state of the nanodots and leads to the formation of skyrmions. Micromagnetic simulations explain the evolution of the magnetic state during magnetic force microscopy scans and confirm the possibility of the skyrmion formation. The key transition in this process is the formation of the horseshoe magnetic domain. We have found that formation of skyrmion by the magnetic probe is a reliable and repetitive procedure. Our findings provide a simple solution for skyrmions formation in nanodots.
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