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Coherent magnetization precession in GaMnAs induced by ultrafast optical excitation
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10.1063/1.2785114
/content/aip/journal/apl/91/11/10.1063/1.2785114
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/11/10.1063/1.2785114
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Kerr rotation measurements for excited by linearly polarized and circularly polarized light ( and ) at a temperature of . (b) Oscillation (open circles) arising from excitation by linear-polarized light. The solid line is the fitted result. (c) Fourier transform of the oscillation in (b).

Image of FIG. 2.
FIG. 2.

Amplitude and angular frequency as a function of temperature at constant pump intensity , and as a function of pump intensity (in units of ) at (/pulse).

Image of FIG. 3.
FIG. 3.

(a) Gilbert damping coefficient as a function of pump intensity in units of at (/pulse). (b) Gilbert damping coefficient as a function of temperature at two pump intensities (triangles) and (circles).

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/content/aip/journal/apl/91/11/10.1063/1.2785114
2007-09-14
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Coherent magnetization precession in GaMnAs induced by ultrafast optical excitation
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/11/10.1063/1.2785114
10.1063/1.2785114
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