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Memory-bit selection and recording by rotating fields in vortex-core cross-point architecture
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10.1063/1.3551524
/content/aip/journal/apl/98/5/10.1063/1.3551524
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/5/10.1063/1.3551524
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Two-by-two cross-point architecture. At each intersection there is positioned a single vortex-state Py disk of and . The left inset shows an optical microscopy image of the 50-nm-thick Au crossed striplines of width, with the Py disks at the intersections. The right inset shows two Gaussian pulse currents of equal width and a certain time delay , as applied along the and axes.

Image of FIG. 2.
FIG. 2.

Analytical calculation of the threshold strengths required for upward-to-downward core switching as function of with Py disk of same dimensions as real sample, and . The purple (orange) curve indicates of a CCW (CW) rotating field, whereas the green one is that of a linear field. The gray vertical dashed line is at ().

Image of FIG. 3.
FIG. 3.

XMCD images of the three different disks’ vortex-core regions marked as b, c, and d (see Fig. 1). The dark and white spots indicate the upward and downward core orientations, respectively. The initial core magnetization (see the left column) was upward for all of the disks. The polarization of the applied fields at each intersection is indicated by the arrows. The strength of the applied fields along the and axes is . The first column represents the initial state at each Py disk, the second column shows the state after applying orthogonal currents of , and the third column indicates the state after applying orthogonal currents of .

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/content/aip/journal/apl/98/5/10.1063/1.3551524
2011-02-01
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Memory-bit selection and recording by rotating fields in vortex-core cross-point architecture
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/5/10.1063/1.3551524
10.1063/1.3551524
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