to extract information.

![(Color online) LDOS for a Zn impurity represented by a potential $V_3=5t$ and calculated with a constant scattering rate $\eta = 0.01 t$ where the hopping is suppressed using a Gaussian distribution with the maximum $\delta t$ on the four bonds around the impurity, and a decay length of one lattice spacing. (a,c,e) show the LDOS at the IS site and (b,d,f) at the NN site. (a) and (b) show the LDOS in a region of constant gap ($\delta \Delta = 0$) for different hopping suppression where the values of $\delta t$ shown vary from 0 (top) to $-t$ (bottom) in steps of $-0.1t$. (c) and (d) show the LDOS in a small-gap region without suppression of the hopping while (e) and (f) show it in large-gap region with maximum suppression of the hopping ($\delta t = -t$).[]{data-label="fig6"}](Fig6.eps){width="1.\columnwidth"}

The resonances observed in Fig. \[fig5\](e) still appear as small peaks in the LDOS at a shifted energy, and so might be observable; the case for such a scenario really eliminating the resonances in the large-gap regions is therefore not completely convincing. Before leaving this scenario, therefore, we discuss briefly the case of reduced hopping. We remind the reader 