Figure 7: Shot-noise measurement and spin polarization.
From: Spin–orbit induced electronic spin separation in semiconductor nanostructures
(a) Fano factor as a function of the conductance, G. The dashed blue line shows the theoretical curve of zero spin polarization, F = 1 - G/G0 (G0=2e2/h), and the dotted red line shows the case of full spin polarization. (b) VSG dependence of the conductance G and the transmission τσ of up-spin (σ=↑) and down-spin (σ=↓) channels. τσ is extracted from the measured conductance 
and Fano factor 
. The fine lines through the circles indicate the degree of error. (c) Spin polarization PS defined by 
as a function of VSG. At 0.5(2e2/h), the maximum value reaches PS=0.7. The error bars in panel b and c represent the standard deviation deduced from the numerical fitting procedure as a result of the experimental uncertainty of the Fano factor.
