Abstract:The single-orbital Anderson impurity model using graphene as the host material is considered for the case where the impurity is placed on top of a carbon atom of the graphene lattice. This is an excellent setup for the pseudogap impurity model, where there exists a quantum phase transition from the free local moment phase to the Kondo screening phase. In this work, the scaling behavior of the spin-spin correlator at quantum critical points is numerically investigated. It shows signatures of the logarithmic co… Show more
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