# Probability of specular reflection in Fuchs theory for copper

1. Apr 9, 2010

### pafcu

The resistivity for thin films can be obtained using Fuchs theory
$$\rho = \left[1-\left(\frac{3}{2\kappa}\right)(1-p)\int_1^\infty\left(\frac{1}{t^3}-\frac{1}{t^5}\right)\frac{1-\exp(-\kappa t)}{1-p\exp(-\kappa t)}\mathrm{d}t\right]^{-1} \rho_0$$
where $$p$$ is the probability that an electron will be specularly (elastically) reflected from the film surface.

I haven't been able to find any value for $$p$$ for copper. Does anyone know of a good reference where the value could be found? What factors affect this probability?