Transport anomaly at the ordering transition for adatoms on graphene

Boris L. Altshuler; Sergey Kopylov; Vadim Cheianov; Vladimir I. Fal'ko

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Transport anomaly at the ordering transition for adatoms on graphene

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arxiv 1102.1084 v1 pith:XUY5Z2VQ submitted 2011-02-05 cond-mat.dis-nn cond-mat.stat-mech

Transport anomaly at the ordering transition for adatoms on graphene

Sergey Kopylov , Vadim Cheianov , Boris L. Altshuler , Vladimir I. Fal'ko This is my paper

classification cond-mat.dis-nn cond-mat.stat-mech

keywords adatomsgrapheneorderingresistivitytransitionanalyzeanomalycritical

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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.

Transport anomaly at the ordering transition for adatoms on graphene

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