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Memory effects in photoinduced femtosecond magnetization rotation in ferromagnetic GaMnAs
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10.1063/1.3058765
/content/aip/journal/apl/94/2/10.1063/1.3058765
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/2/10.1063/1.3058765
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Static magnetic memory. [(a) and (b)] Sweeping a slightly tilted field (5° from the axis and 33° from the axis) up (dashed line) and down (solid line) leads to consecutive 90° magnetization switchings between the and planes, manifesting as a “major” hysteresis loop in the Hall magnetoresistivity. [(c) and (d)] Minor hysteresis loop with field sweeping in the vicinity of 0 T. The magnetic memory state or is parallel to one of the easy axis directions in the plane.

Image of FIG. 2.
FIG. 2.

Photoinduced femtosecond four-state magnetic hysteresis. field scans of at 5 K for time delays , 600 fs, and 3.3 ps. The traces are vertically offset for clarity. Inset (left): temporal profiles of normalized Kerr and ellipticity angle changes at 1.0 T. Inset (right): static magnetization curve at 5 K, measured in the same experimental condition (but without the pump pulse).

Image of FIG. 3.
FIG. 3.

(a) Photoinduced for two in-plane magnetic memory states, shown together with the pump-probe cross correlation (shaded). The opposite, out-of-plane rotations for the and are illustrated in (b).

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/content/aip/journal/apl/94/2/10.1063/1.3058765
2009-01-12
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Memory effects in photoinduced femtosecond magnetization rotation in ferromagnetic GaMnAs
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/2/10.1063/1.3058765
10.1063/1.3058765
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