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

  • Moon, Jung-Hwan (Dept. of Materials Science of Engineering, Korea University) ;
  • Lee, Kyung-Jin (Dept. of Materials Science of Engineering, Korea University)
  • Received : 2010.11.01
  • Accepted : 2010.12.13
  • Published : 2011.03.31

Abstract

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.

Keywords

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