▎ 摘　　要

The switching behavior of butadienimine molecule with two tautomeric forms sandwiched between different graphene nanoribbons (GNRs) electrodes are investigated by applying nonequilibrium Green's function formalism combined with first-principles density functional theory. The calculated results show that the edge geometry of GNRs electrodes play a significant role in determining the electronic transport properties and switching behavior of the butadienimine molecular junctions. A higher current switching ratio can be obtained for the molecular junctions with zigzag edged graphene nanoribbons, which suggests that this system has a broader application in future logic and memory devices. (C) 2017 The Japan Society of Applied Physics