Collective magnetic behavior of graphene nanohole superlattices
Graphene, magnetism, spin, magnetic semiconductor, superlattice
We predict a new class of 2-D crystalline “bulk” magnets—the graphene nanohole (GNH) superlattices with each GNH acting like a “super” magnetic atom, using first principles calculations. We show that such superlattices can exhibit long-range magnetic order above room temperature, with a collective magnetic behavior governed by inter-NH spin spin interactions in additional to intra-NH spin ordering. Furthermore, magnetic semiconductors can be made by doping magnetic NHs into semiconducting NH superlattices. The possibility of engineering magnetic GNHs for storage media and spintronics applications is discussed.
Tsinghua University Press
Decai Yu,Elizabeth M. Lupton,Miao Liu,Wei Liu,Feng Liu, Collective magnetic behavior of graphene nanohole superlattices. NanoRes.2008, 1: 56-62