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arXiv · 1410.8354

Spin-spin correlations of magnetic impurities in graphene

A. D. Guclu·Nejat Bulut
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Abstract

We study the interaction between two magnetic adatom impurities in graphene using the Anderson model. The two-impurity Anderson Hamiltonian is solved numerically by using the quantum Monte Carlo technique. We find that the inter-impurity spin susceptibility is strongly enhanced at low temperatures, significantly diverging from the well-known Ruderman-Kittel-Kasuya-Yoshida (RKKY) result which decays as $R^{-3}$.

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A. D. Guclu, Nejat Bulut. 2014-10-30. Spin-spin correlations of magnetic impurities in graphene. https://doi.org/10.1103/physrevb.91.125403

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