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Observations of laser induced magnetization dynamics in Co/Pd multilayers with coherent x-ray scattering
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10.1063/1.3670305
/content/aip/journal/apl/99/25/10.1063/1.3670305
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/25/10.1063/1.3670305
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color) Schematic of optical pump x-ray probe experimental setup. (a) Sample magnetization reconstructed using MAD Holography.13 (b) Overhead schematic of experimental geometry.

Image of FIG. 2.
FIG. 2.

(Color) (a) Normalized change in magnetic scattering at various time delays. The q range extends out to 0.125 nm−1. The stable speckle configuration indicates that the underlying domain structure is maintained. (b) Demagnetization curve from ΔI norm, which is proportional to deviation from M/Ms = 1. The line is a fit to the data with Koopman’s micro three temperature model,20 which indicates a demagnetization of 20%–25%. The plotted curve is significantly broadened by convolution with a 50 ps FWHM Gaussian corresponding to the width of the x-ray probe.

Image of FIG. 3.
FIG. 3.

(Color) (a) Radial integration of the normalized difference for different time delays. (b) Corresponding q dependent correlation to the normalized difference at 0 ps. (c) Shown for the +60 ps signal, by multiplying panels a and b, the elastic and fluctuating portions of the magnetization changes can be identified.

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/content/aip/journal/apl/99/25/10.1063/1.3670305
2011-12-22
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Observations of laser induced magnetization dynamics in Co/Pd multilayers with coherent x-ray scattering
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/25/10.1063/1.3670305
10.1063/1.3670305
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