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Two-dimensional spin diffusion in multiterminal lateral spin valves
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Schematic cross section of a typical three terminal device with ; (b) hysteresis characteristics of source and drain contact pads as determined from low temperature MOKE measurements.

Image of FIG. 2.
FIG. 2.

(a) Measured collector terminal current vs applied magnetic field for a device biased at . Data are shown for both ferromagnetic (FM) and nonmagnetic (NM) central contact ; (b) measured as a function of collector terminal voltage at for the same device. The line shows the theoretically estimated values for under the same experimental conditions. A schematic of a potential multiterminal spin-based memory device is shown in the inset.

Image of FIG. 3.
FIG. 3.

(a) Estimated current spin polarization (left axis) and enhancement factor (right axis) vs measured at ; (b) enhancement factor vs normalized collector current for various width devices at ; (c) vs device widths for various levels of normalized carrier extraction at .

Image of FIG. 4.
FIG. 4.

Deviation from equilibrium electrochemical potential difference between spin-up and spin-down electrons are plotted for (a) and (b) devices at .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Two-dimensional spin diffusion in multiterminal lateral spin valves