By means of first principles calculations we demonstrate an effective method to tailor the local spin configuration of graphene on Co(0001) surface through nitrogen doping. Two different site occupancies of the N impurities are discussed with the focus on structural, electronic and magnetic properties. N induces opposite local spin polarization at the two sites through Zener exchange-type hybridization with Co substrate. In addition, the induced spin polarization is energy dependent and controllable by electric field. Consequently this structure can be applied as a spin injection source in graphene based spintronics.
@article{arxiv.1111.3481,
title = {Nitrogen-induced Local Spin Polarization in Graphene on Cobalt},
author = {Zhongping Chen and Ling Miao and Xiangshui Miao},
journal= {arXiv preprint arXiv:1111.3481},
year = {2011}
}