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, Bias dependence of the spin signal and of the HWHM at 10 K for both in-plane and out-of-plane geometries. The inset in (a) shows the bias dependence of the spin resistance-area product R s  A in kX. lm 2 . Dashed lines are guides for the eye. (c) Temperature dependence of inverted Hanle effect for two different bias currents À10 lA (À217 mV) and À20 lA (À274 mV), Color online). ((a) and (b))
The inset shows the inverted Hanle signal measured for a bias current ofÀ20 lA (À274 mV) at various temperatures. (d) Temperature dependence of the HWHM of Hanle curves for À10 lA (À217 mV) and À20 lA ,