Abstract
We develop a method for computing the ac and dc conductivity of composite films, composed of two types of particles. The films are grown by integrating the Kardar-Parisi-Zhang and the Ginzburg-Landau equations that govern their height and the order parameter. is computed as a function of the film’s thickness, frequency, and several relevant morphological parameters. Simulations indicate that the surface roughness strongly affects the films’ conductivity. In particular, while exhibits universality if the films’ surface is smooth, the universality breaks down with a rough surface. The results also indicate the consistency of the trends in the conductivities with the morphological transitions in the films.
2 More- Received 12 May 2006
DOI:https://doi.org/10.1103/PhysRevB.74.045413
©2006 American Physical Society