Publikation: 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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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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FUSCO, 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.77.174426BibTex
@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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