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Spin-spin correlations of magnetic adatoms on graphene
(American Physical Society, 2015-03-03)
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 ...
Sublattice engineering and voltage control of magnetism in triangular single and bi-layer graphene quantum dots
When a Dirac electron is confined to a triangular graphene quantum dot with zigzag edges, its low-energy spectrum collapses to a shell of degenerate states at the Fermi level leading to a magnetized edge. The shell degeneracy ...