▎ 摘　　要

We use density functional theory to explore the implications of atomically precise patterning of graphene with monovacancies. We show that one-dimensional tracks of vacancies can be used to turn graphene into a magnetic meta-material with properties that can be flexibly varied by external factors such as doping. Chemical functionalization by H or F atoms does not disrupt the magnetic structure of the material; moreover, controlled passivation with appropriate chemical species could be used as an additional means to tailor the properties of the meta-material. This leads us to propose patterning of graphene with vacancy tracks as a possible route towards integrated spintronic circuits on single graphene sheets. Several possible pathways towards practical fabrication of such systems are discussed. [GRAPHICS] Spin density in graphene with periodically arranged mono-vacancies. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim