• Title/Summary/Keyword: spin-motive force

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Spin-Motive Force Caused by Vortex Gyration in a Circular Nanodisk with Holes

  • Moon, Jung-Hwan;Lee, Kyung-Jin
    • Journal of Magnetics
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    • v.16 no.1
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    • pp.6-9
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    • 2011
  • Spin-motive force has drawn attention because it contains a fundamental physical property. Spin-motive force creates effective electric and magnetic fields in moving magnetization; a vortex is a plausible system for observing the spin-motive force because of the abrupt profile of magnetization. However, the time-averaged value of a spin-motive force becomes zero when a vortex core undergoes gyroscopic motion. By means of micromagnetic simulation, we demonstrates that a non-zero time-averaged electric field induced by spin-motive force under certain conditions. We propose an experimental method of detecting spin-motive force that provides a better understanding of spin transport in ferromagnetic system.

Emission of Electric Field by Spin-motive Force in a Nanodisk with Holes

  • Moon, J.H.;Lee, K.J.
    • Proceedings of the Korean Magnestics Society Conference
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    • 2009.12a
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    • pp.87-88
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    • 2009
  • A model system allowing the experimental determination of the spin-motive force from the vortex gyration motion in a circular nanodisk is presented. It provide an easy experimental detection of the spin-motive force and thus an important tool to study the relationship between the charge and spin transports in ferromagnetic system.

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Electric Field Induced by Spin-motive Force in a Perforated Nanodisk

  • Moon, J.H.;Lee, K.J.
    • Proceedings of the Korean Magnestics Society Conference
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    • 2010.06a
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    • pp.137-138
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    • 2010
  • A model system allowing the experimental determination of the spin-motive force from the vortex gyration motion in a circular nanodisk is presented. It can be one way to get experimental detection of the spin-motive force and it will provide an important tool to study the relationship between the charge and spin transports in ferromagnetic system.

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Enhancement of Damping Caused by Spin-motive Force

  • Moon, J.H.;Seo, S.M.;Lee, K.J.
    • Proceedings of the Korean Magnestics Society Conference
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    • 2009.12a
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    • pp.89-90
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    • 2009
  • To summarize, we observed a spatial distribution of damping tensor gives a different simulation result. When we use LLG equation, especially dealing with spatially-varying magnetization texture, it is expected that damping tensor should be considered instead of constant damping.

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