Interaction between the localized states in graphene

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:454

Article

Ghosh, Angsula^1,2  Frota, H. O.¹ 

[1] Univ Fed Amazonas, Dept Phys, BR-69077000 Manaus, Amazonas, Brazil

[2] Sao Paulo State Univ, Inst Theoret Phys, Sao Paulo, SP, Brazil

关键词: Graphene;    Adatoms;    Phase transition;   

DOI  :  10.1016/j.jmmm.2018.01.033

来源: Elsevier

【 摘 要 】

The formation of the localized magnetic moments is studied due to the presence of two-impurities in the two sublattices of a single-layer graphene sheet. The interaction between two similar magnetic impurities and also the hybridizations are decisive in determining the boundary between the magnetic and the non-magnetic states. A strong chemical potential dependence of the above phase boundary is evident. An anomalous scaling of the boundary separating the above regions is more pronounced in the two-impurity case when compared to that of the single impurity. (C) 2018 Elsevier B.V. All rights reserved.

【 授权许可】

Free