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Tunable magnetic domain wall oscillator at an anisotropy boundary
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10.1063/1.3562299
/content/aip/journal/apl/98/10/10.1063/1.3562299
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/10/10.1063/1.3562299
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Sketch of the perpendicularly magnetized strip with a step in the magnetic anisotropy (from to ) and associated DW potentials in the absence and presence of an external magnetic field. At a properly tuned field, the DW energy minimum might shift to the Bloch/Néel transition point, where it is easy to excite DW precession by a spin-polarized current .

Image of FIG. 2.
FIG. 2.

(a) 1D-model solution of DW precession frequency as function of current density at various fields. Positive (negative) indicates clockwise (counterclockwise) precession. Sketches show the potential landscape of the DW and the displacement due to the electron flow. The inset graph shows the equilibrium DW width as function of position. (b) Similar to (a) but obtained from micromagnetic simulations. The inset shows snapshots of the spin structure during simulation ( and ). (c) Critical effective velocity (current) as a function of applied field, obtained using the two methods.

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/content/aip/journal/apl/98/10/10.1063/1.3562299
2011-03-11
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Tunable magnetic domain wall oscillator at an anisotropy boundary
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/10/10.1063/1.3562299
10.1063/1.3562299
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