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Skyrmion Formation in Nanodisks Using Magnetic Force Microscopy Tip.

Mateusz Zelent1, Iuliia V Vetrova2, Jan Šoltýs2

  • 1Institute of Spintronics and Quantum Information, Faculty of Physics, Adam Mickiewicz University in Poznan, ul. Uniwersytetu Poznańskiego 2, PL-61-614 Poznan, Poland.

Nanomaterials (Basel, Switzerland)
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Summary

Researchers numerically demonstrated skyrmion formation in ultrathin nanodisks using a magnetic force microscopy tip. This reliable method offers a simple solution for creating magnetic skyrmions in nanodisks.

Keywords:
magnetic force microscopymagnetic statesmicromagnetic simulationmultilayer structureskyrmions

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Area of Science:

  • Condensed matter physics
  • Materials science

Background:

  • Magnetic skyrmions are topologically protected spin textures with potential applications in data storage and spintronics.
  • Controlling skyrmion formation in magnetic nanostructures is crucial for their practical implementation.

Purpose of the Study:

  • To numerically and experimentally demonstrate a reliable method for inducing skyrmion formation in ultrathin nanodisks.
  • To investigate the role of a local magnetic field from a magnetic force microscopy tip in skyrmion generation.

Main Methods:

  • Numerical simulations using micromagnetic modeling to analyze magnetization dynamics.
  • Experimental validation using magnetic force microscopy to probe nanodisk magnetization states.

Main Results:

  • The local magnetic field from the MFM tip significantly influences nanodisk magnetization, leading to skyrmion formation.
  • The transition from labyrinth domain states to skyrmions involves the formation of a horseshoe magnetic domain.
  • Skyrmion formation using the magnetic probe is a repeatable and reliable process.

Conclusions:

  • A simple and effective method for generating skyrmions in ultrathin nanodisks has been established.
  • The findings pave the way for controlled skyrmion manipulation in magnetic nanostructures.