The geometrical and electronic structure of potassium doped phenanthrene, \ce{K3C14H10}, have been studied by first-principles density functional theory. The main effect of potassium doping is to inject charge in the narrow phenanthrene conduction band, rendering the system metallic. The Fermi surface for the experimental X-rays structure is composed of two sheets with marked one and two dimensional character respectively.
@article{arxiv.1106.0377,
title = {Electronic and Geometrical Structure of Potassium doped Phenanthrene},
author = {P. L. de Andres and A. Guijarro and J. A. Verges},
journal= {arXiv preprint arXiv:1106.0377},
year = {2011}
}