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Single picojoule pulse switching of magnetization in ferromagnetic (Ga,Mn)As
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10.1063/1.3524525
/content/aip/journal/apl/97/23/10.1063/1.3524525
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/23/10.1063/1.3524525
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

A scheme of the experimental setup.

Image of FIG. 2.
FIG. 2.

(a) MOKE measurements of magnetic hysteresis of the (Ga,Mn)As film measured with the pulse picker off and on (with and ). (b) The measured coercive field as a function of pulse energy . The vertical arrow indicates the pulse energy used to measure dynamics of the PCE in Fig. 4.

Image of FIG. 3.
FIG. 3.

(a) Schematic representation of pulse trains with repetition rate of 100 and 0.2 Hz . (b) Magnetic switching observed for repetition rate of 100 and 0.2 Hz. The sweep rate of the magnetic field is 1.4 mT/s. At low repetition rates, switching is delayed until a pulse arrives.

Image of FIG. 4.
FIG. 4.

(a) Schematic representation of a double-pulse train (100 Hz) with being the delay between two pulses. (b) Temporal behavior of the coercive field. corresponds to the coercive field detected in the quasistatic MOKE experiment. (c) The coercive field of the (Ga,Mn)As sample as a function of . As the delay is increased, the coercive field is reduced toward the that observed with the individual pulses. Solid line is a fit to Eq. (1) with the time constant .

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/content/aip/journal/apl/97/23/10.1063/1.3524525
2010-12-06
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Single picojoule pulse switching of magnetization in ferromagnetic (Ga,Mn)As
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/23/10.1063/1.3524525
10.1063/1.3524525
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