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Reliable low-power control of ultrafast vortex-core switching with the selectivity in an array of vortex states by in-plane circular-rotational magnetic fields and spin-polarized currents
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10.1063/1.2807274
/content/aip/journal/apl/92/2/10.1063/1.2807274
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/2/10.1063/1.2807274
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Left column: Geometry and dimensions of the model Py nanodisk, and distributions of vortex states with (a) up- and (b) down-core orientations, with the CCW rotation of in-plane around the VC. The color and height display the local and their out-of-plane components, respectively. The middle and right columns display the VC trajectories of the vortex gyrotropic motions during relaxation from a shift of each VC from its initial center position, and during the vortex motion from its initial center position under with and at , respectively. The red and blue colors denote the VC trajectories of the up- and down-core orientations, respectively.

Image of FIG. 2.
FIG. 2.

Illustrations of in (a), of in (b), and of in (c), rotating with in the film plane. The right column shows the time variation of the magnitude of the field or current components along the and axes. The sum of and with equal and leads to with the same . The superposition of the orthogonal circular fields results in a linear oscillating field, such that . According to the phase difference between and , the direction of the linear field is determined.

Image of FIG. 3.
FIG. 3.

(a) VC trajectories of gyrotropic motions of a VC driven by , , and for different values of as noted. The red and blue colors of the trajectories indicate the motions of the initial up-core orientation and of the reversed VC after the VC switching, respectively. (b) Perspective snapshot images of the temporal evolution of VC reversals at the indicated times.

Image of FIG. 4.
FIG. 4.

All of the data are presented in the same way as those in Fig. 3, except for the application of , , and with a current density of .

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/content/aip/journal/apl/92/2/10.1063/1.2807274
2008-01-16
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Reliable low-power control of ultrafast vortex-core switching with the selectivity in an array of vortex states by in-plane circular-rotational magnetic fields and spin-polarized currents
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/2/10.1063/1.2807274
10.1063/1.2807274
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