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Dynamics of 1-D Chains of Magnetic Vortices in Response to Local and Global Excitations

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3 Author(s)

We report the magnetic vortex dynamics of 1-D chains of nanomagnetic disks under a time-dependent magnetic field localized at one end of the chain. The transmission of the peak amplitude of the gyrotropic excitation mode of the vortex core along the chain has been actively controlled by manipulating the geometry and condition of preparation of the magnetic ground states of the chains. The transmission is maximum for direct magnetostatic coupling and identical chirality of the nanodisks with geometric asymmetry. Dynamics of the optimized system under a global excitation field has also been investigated to understand the role of magnetostatic interaction in the energy transfer under the local excitation field. The observations are particularly important for the design of fast spin logic systems and the magnonic crystals.

Published in:

Magnetics, IEEE Transactions on  (Volume:46 ,  Issue: 6 )

Date of Publication:

June 2010

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