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All-optical four-state magnetization reversal in (Ga,Mn)As ferromagnetic semiconductors
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10.1063/1.3634031
/content/aip/journal/apl/99/9/10.1063/1.3634031
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/9/10.1063/1.3634031
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a)–(c) S(t) for H = 100 mT, α = 0.03 (Ref. 21), and three pump fluences. Kc  = 0.0144 meV, Ku  = 0.0025 meV, and Kuz  = 5Kc give anisotropy fields 1.7 mT, 0.29 mT, and 8.3 mT (Ref. 6). (d) Angle , 0 ≤ Θ (t) ≤ π. (e) In-plane component of the non-thermal field . (f) Thermal field component .

Image of FIG. 2.
FIG. 2.

(Color online) Nonlinear magnetization dynamics (α = 0.3, E = 6 × 105 V/cm). (a) Comparison of Mn spin re-orientation angles Θ (t) and thermal anisotropy field along [010] (inset) during ∼100 ps and ∼10 ps timescales. (b) Comparison of full calculation (solid line) with result obtained by neglecting Hexch (t) (dashed line) and within semiclassical adiabatic approximation of spin photoexcitation (dotted line).

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/content/aip/journal/apl/99/9/10.1063/1.3634031
2011-09-01
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: All-optical four-state magnetization reversal in (Ga,Mn)As ferromagnetic semiconductors
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/9/10.1063/1.3634031
10.1063/1.3634031
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