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Manipulation of the Excitation State of the Coupled Vortices in a Pair of Magnetic Disks

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3 Author(s)
Sugimoto, S. ; Inst. for Solid State Phys., Univ. of Tokyo, Kashiwa, Japan ; Fukuma, Y. ; Otani, Y.

Coupled gyration modes of the magnetic vortices are studied in two separated disks. We have experimentally detected that all four modes are selectively excited mainly by the spin-transfer torque, depending on the combination of their polarities and chiralities. The evaluated dipolar coupling intensity shows a certain decrease from the rigid vortex model.

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Magnetics, IEEE Transactions on  (Volume:47 ,  Issue: 10 )