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Local spin manipulation in ferromagnet-semiconductor hybrids
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Remanent DMS PL polarization degree for different FM nanostructures at (data points, left axis). The solid lines represent results of fringe field calculations (right axis).

Image of FIG. 2.
FIG. 2.

(Color online) Magnetic field dependence of the PL polarization degree measured in the center of the antidot (main graph) and in a reference QW area without FMs (upper inset). Filled and open symbols represent increasing and decreasing fields, respectively. A cross-sectional sketch of the antidot is shown in the lower inset.

Image of FIG. 3.
FIG. 3.

Spatially resolved scan of the QW PL polarization across the antidot at . The polarization (open circles) is compared to fringe field calculations (solid line). The black rectangles indicate the position of the antidot. The fringe field on the right axis is calculated from via the slope . A scanning electron microscope image of the antidot is shown in the inset (arrow indicates scan direction).

Image of FIG. 4.
FIG. 4.

(Color online) (a) Temperature dependence of the remanent PL polarization in the center of the antidot (circles) and of a plain QW reference without FMs (triangles) at . The solid lines serve as a guide to the eye. (b) in the center of the antidot at after shortly exposing the FM to a temperature . (c) in the antidot center as a function of a previously applied magnetization field . (d) Out-of-plane magnetization of a plain multilayer FM at as obtained by SQUID.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Local spin manipulation in ferromagnet-semiconductor hybrids