含磁性和磁性吸附原子的石墨烯光学电导率的理论研究
Theoretical study of optical conductivity of graphene with magnetic and nonmagnetic adatoms
摘要：
我们提出了一个理论研究的光学导电性的石墨烯与磁性和吸附原子。首先，通过在纯石墨烯中引入交变电势，我们证明了能隙的形成以及相应的光学电导率。我们强调这种差距的形成和所谓的泡利阻塞效应之间的区别。接下来，我们将这一想法应用到石墨烯与吸附原子之间引入的载体自旋和自旋的吸附原子的磁相互作用。通过对各种可能的基态自旋组态的研究，我们发现反铁磁组态产生的电子总能量最低，并且是唯一能形成能隙的组态。此外，我们分析了四种不同的情况下，导致类似的gaplike结构，并提出了一种手段来解释的磁性和可能的顺序的吸附原子的石墨烯单独从光学电导率数据。我们将这种分析应用于最近报道的氧化石墨烯的实验数据。
英文摘要：
We present a theoretical study of the optical conductivity of graphene with magnetic and nonmagnetic adatoms. First, by introducing alternating potential in a pure graphene, we demonstrate a gap formation in the density of states and the corresponding optical conductivity. We highlight the distinction between such a gap formation and the so-called Pauli blocking effect. Next, we apply this idea to graphene with adatoms by introducing magnetic interactions between the carrier spins and the spins of the adatoms. Exploring various possible ground-state spin configurations of the adatoms, we find that antiferromagnetic configuration yields the lowest total electronic energy, and is the only configuration that forms a gap. Furthermore, we analyze four different circumstances leading to similar gaplike structures and propose a means to interpret the magneticity and the possible orderings of the adatoms on graphene solely from the optical conductivity data. We apply this analysis to the recently reported experimental data of oxygenated graphene.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
