We analyze a manifestation of the partial ordering transition of adatoms on graphene in resistivity measurements. We find that Kekule mosaic ordering of adatoms increases sheet resistance of graphene, due to a gap opening in its spectrum, and that critical fluctuations of the order parameter lead to a non-monotonic temperature dependence of resistivity, with a cusp-like minimum at T=T_c.
@article{arxiv.1102.1084,
title = {Transport anomaly at the ordering transition for adatoms on graphene},
author = {Sergey Kopylov and Vadim Cheianov and Boris L. Altshuler and Vladimir I. Fal'ko},
journal= {arXiv preprint arXiv:1102.1084},
year = {2011}
}