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Optimized stray-field-induced enhancement of the electron spin precession by buried Fe gates
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) (a) TRFR oscillations on a Fe (thick line) and a Au (thin line) grating . Inset: sample structure with buried and top-gated Fe stripes. (b) Top: numerical simulation of the magnetic stray field . Bottom: numerical simulation of the component of for buried and top-gated sample structures. (c) Simulated illumination intensity of the QW between two Fe stripes for the buried structure. (d) Etched GaAs sample with double-layer PMMA mask. (e) Simulation of the Fe stripe magnetization , in an external magnetic field . Cut through the plane.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Enhancement of the electron spin precession frequency as a function of for different gap and stripe widths (solid lines). Inset: because of the etching process, the stripes are slightly too wide and the gaps too narrow. The dashed line shows for a sample with equal gap and stripe width . (b) and for different at as measured (dashed lines) for buried and top-gated and as simulated (solid line) for buried structures. Triangle: Measured for the compensated sample. (c) Simulated and as a function of for different (buried structures).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optimized stray-field-induced enhancement of the electron spin precession by buried Fe gates