Yang Guang, Li Baoyue, Zhang Wei, Ye Miao, Ma Tianxing
Department of Physics, Beijing Normal University, Beijing 100875, People's Republic of China.
J Phys Condens Matter. 2017 Sep 13;29(36):365601. doi: 10.1088/1361-648X/aa7dc1. Epub 2017 Jul 5.
Using the determinant quantum Monte-Carlo method, we elucidate the strain tuning of edge magnetism in zigzag graphene nanoribbons. Our intensive numerical results show that a relatively weak Coulomb interaction may induce a ferromagnetic-like behaviour with a proper strain, and the edge magnetism can be enhanced greatly as the strain along the zigzag edge increases, which provides another way to control graphene magnetism even at room temperature.
利用行列式量子蒙特卡罗方法，我们阐明了锯齿形石墨烯纳米带中边缘磁性的应变调控。我们大量的数值结果表明，相对较弱的库仑相互作用在适当应变下可能诱导出类似铁磁的行为，并且随着沿锯齿形边缘的应变增加，边缘磁性会大大增强，这为即使在室温下控制石墨烯磁性提供了另一种方法。
