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Spin waves interference from rising and falling edges of electrical pulses
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10.1063/1.3643156
/content/aip/journal/apl/99/13/10.1063/1.3643156
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/13/10.1063/1.3643156
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) An optical micrograph of a representative device. (b) A square wave input produces Gaussian spin wave packets at both the rising and falling edges. (c) Contour plot of measured spin wave packets as a function of the bias field (Hb ) for a 100 ps pulse excitation. The scale bar is in millivolt. (d) The change in spin wave frequency as a function of Hb .

Image of FIG. 2.
FIG. 2.

(Color online) (a) Line plots of Gaussian wave packets due to the rising and falling edge of a unipolar voltage pulse for the various pulse widths, tδ showing constructive (red thin lines) or destructive (blue thick lines) interferences. (b) Contour plot showing the two Gaussian wave packets as a function of tδ . (c) A section of (b) zoomed in to reveal the interference. (d), (e), and (f) are plots corresponding to (a), (b), and (c) for a bipolar pulse, respectively. The scale bar is in millivolt.

Image of FIG. 3.
FIG. 3.

(Color online) The Mx /Ms component (a) and the time response of the spin wave for different tδ (b) with a 2 kOe out-of-plane bias field. The Mx /Ms component (c) and the spin wave for different tδ (d) with a 1 kOe in-plane bias field along the nanowire.

Image of FIG. 4.
FIG. 4.

(Color online) (a) The contour plot of spin waves generated from the rising and falling edges of a unipolar square pulse with different tδ . (b) The amplitude of the frequency spectrum of a square pulse with different tδ , at the resonance frequency f of 1.5 GHz.

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/content/aip/journal/apl/99/13/10.1063/1.3643156
2011-09-26
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Spin waves interference from rising and falling edges of electrical pulses
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/13/10.1063/1.3643156
10.1063/1.3643156
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