采用基于密度泛函理论的第一性原理方法,研究了扶手椅型石墨烯纳米带吸附3d过渡金属磁性Ni和非磁性Cu单原子链的结构、电子性质和磁性.吸附体系经过弛豫后,不同宽度纳米带吸附单原子链的稳定结构是不同的.Ni比Cu原子链在石墨烯纳米带表面的吸附更为稳定.原子链吸附在纳米带的边缘洞位(即5AG-1、6AG-1和7AG-1位置)时较为稳定,且稳定程度随着纳米带宽度的增加而增加.原子链和石墨烯纳米带的相互作用使得Ni单原子链吸附体系的磁矩为零.Cu原子链吸附5AG-1的复合体系具有磁性.Ni原子链的吸附体系呈现出带隙较小的半导体性质,而Cu原子链的吸附体系全都表现出金属性质.
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