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The local moment squared as a function of μ. (a) Two impurities both located on the edge sites belonging to sublattice A, (b) two impurities on different sublattices. denotes the configuration that two impurities are located on A 0 and A 1 sites. Here, we use U = 0.8t, V = 0.5t, , and ; (c) the schematic structure of zigzag chain. One adatom is fixed on the red circled site A 0 and the other one is moved along the zigzag chain.
The spin-spin correlation between two magnetic impurities on the zigzag edge as a function of μ. One impurity is fixed on the site A 0, the other impurity is located on the site A 1(a), and B 0 (b), respectively. Here, we use and .
The weight of the different components of the d electrons wave function on A 0 and A 1. Here, we use U = 0.8t, V = 0.5t, , and .
The spin-spin correlation of the two magnetic impurities located on A-A and A-B sites in bulk graphene. We fix the location of one impurity on a site belonging to the sublattice A. A-A case means the other impurity is on the next nearest neighbor (belonging to sublattice A), and A-B denotes that the other impurity is located on the nearest neighbor (belonging to sublattice B). Here, we use U = 0.8t, V = 0.5t, . (a) Two adatoms are located on the edge of ZGNR and (b) two adatoms are located on the bulk graphene.
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