Electronic and magnetic properties of silicon adsorption on graphene
Electronic and magnetic properties of silicon adsorption on graphene
复制标题
石墨烯上硅吸附的电子和磁性特性
DOI：
10.1016/j.ssc.2011.05.027
复制
发表时间：
2011-09-01
影响因子：
2.1
通讯作者：
Zhu, Z. Z.
中科院分区：
文献类型：
--
作者：
Hu, C. H.;Zheng, Y.;Zhu, Z. Z.
Graphene has proved to be extremely sensitive to its surrounding environment, such as the supporting substrate and guest adatoms. In this work, the structural stabilities, and electronic and magnetic properties of graphene with low-coverage adsorption of Si atoms and dimers are studied using a first-principles method. Our results show that graphene with Si adatoms is metallic and magnetic with a tiny structural change in the graphene, while graphene with Si addimers is semi-metallic and nonmagnetic with a visible deformation of the graphene. The spin-polarized density of states is calculated in order to identify the electronic origin of the magnetic and nonmagnetic states. The present results suggest that the electronic and magnetic behaviors of graphene can be tuned simply via Si adsorptions. (C) 2011 Elsevier Ltd. All rights reserved.
