论文标题
铜 - 石材复合材料中的电子传输
Electronic transport in copper-graphene composites
论文作者
论文摘要
我们使用密度功能的框架研究了铜 - 石材复合材料的电子传输性能。研究了复合材料通过改变铜/石墨烯/铜（Cu/g/cu）界面模型的界面距离的传导。状态的电子密度揭示了铜和碳原子在费米水平附近的贡献，随着CU-G界面距离的降低。使用Kubo-Greenwood公式计算的模型的电子电导率显示，电导率随CU-G距离的降低而增加。我们还发现，电导率在阈值以下Cu-G距离以下饱和。通过计算Cu/g/cu模型的空间电导率，我们表明石墨烯形成了在小铜 - 石磷酸距离处的电子传导的桥梁，从而增强了电导率。
We investigate the electronic transport properties of copper-graphene composites using a density-functional framework. Conduction in composites by varying the interface distance of a copper/graphene/copper (Cu/G/Cu) interface models was studied. The electronic density of states reveals increasing contributions from both copper and carbon atoms near the Fermi level with decreasing Cu-G interfacial distance. Electronic conductivity of the models computed using the Kubo-Greenwood formula showed the conductivity increases with decreasing Cu-G distance. We also find that the conductivity saturates below a threshold Cu-G distance. By computing the space-projected conductivity of the Cu/G/Cu models, we show that the graphene forms a bridge to the electronic conduction at small copper-graphene distances, thereby enhancing the conductivity.
