Resolution:
## Figure 3.
The zero energy Green’s function in a layer with different effective mass or permittivity. The blue line is the three-dimensional Green’s function (4Πr)^{−1}, the black line is the Green’s function (28) in a layer of different effective mass
or different permittivity, and the red line is the two-dimensional logarithmic Green’s
function ℓ·G=−[γ + ln(r/2ℓ)]/4Π.
Dick |