Magnetic Graphene Nanohole Superlattices

Details Magnetic Graphene Nanohole Superlattices Magnetic Graphene Nanohole Superlattices

2008-03-18

arxiv.org/abs/0803.2660v1

Nano Research, Volume 1, Number 1 / July, 2008

Physics

Computational Physics

Scientific paper

10.1007/s12274-008-8007-6

We investigate the magnetic properties of nano-holes (NHs) patterned in graphene using first principles calculations. We show that superlattices consisting of a periodic array of NHs form a new family of 2D crystalline "bulk" magnets whose collective magnetic behavior is governed by inter-NH spin-spin interaction. They exhibit long-range magnetic order well above room temperature. Furthermore, magnetic semiconductors can be made by doping magnetic NHs into semiconducting NH superlattices. Our findings offer a new material system for fundamental studies of spin-spin interaction and magnetic ordering in low dimensions, and open up the exciting opportunities of making engineered magnetic materials for storage media and spintronics applications.

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