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Magnetic friction of a nanometer-sized tip scanning a magnetic surface : dynamics of a classical spin system with direct exchange and dipolar interactions between the spins

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Nowakscan92.pdf
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2008

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Fusco, Claudio
Wolf, Dietrich E.

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-94051
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https://doi.org/10.1103/PhysRevB.77.174426
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Published

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Physical Review B7. 2008, 7, 174426. Available under: doi: 10.1103/PhysRevB.77.174426

Zusammenfassung

We theoretically study the occurrence of magnetic friction of a nanometer-sized tip scanning a magnetic surface by studying the dynamics of a model of classical spins interacting through dipolar and exchange interactions, neglecting thermal effects. We find that for small scanning velocities, the friction force linearly scales with the velocity, with a slope proportional to the phenomenological damping parameter of the LandauLifshitz Gilbert equation. At higher velocities, the friction vs velocity relationship becomes rather complex with the presence of a maximum that is explained by the excitations of spin-wave resonances in the sample.

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530 Physik

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ISO 690FUSCO, Claudio, Dietrich E. WOLF, Ulrich NOWAK, 2008. Magnetic friction of a nanometer-sized tip scanning a magnetic surface : dynamics of a classical spin system with direct exchange and dipolar interactions between the spins. In: Physical Review B7. 2008, 7, 174426. Available under: doi: 10.1103/PhysRevB.77.174426
BibTex
@article{Fusco2008Magne-4732,
  year={2008},
  doi={10.1103/PhysRevB.77.174426},
  title={Magnetic friction of a nanometer-sized tip scanning a magnetic surface : dynamics of a classical spin system with direct exchange and dipolar interactions between the spins},
  volume={7},
  journal={Physical Review B7},
  author={Fusco, Claudio and Wolf, Dietrich E. and Nowak, Ulrich},
  note={Article Number: 174426}
}
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