Effect of the anchoring groups on the switching behaviour of the dihydroazulene/vinylheptafulvene molecular junction with zigzag-edged graphene nanoribbons electrodes |
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Authors: | Cai-Juan Xia Ai-Yun Yang Bo-Qun Zhang Yao Heng Su Zhe-Yan Tu Jun Wang |
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Institution: | School of Science, Xi'an Polytechnic University, Xi'an, P.R. China |
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Abstract: | The switching behaviour of dihydroazulene/vinylheptafulvene molecule with different anchoring groups sandwiched between two zigzag-edged graphene nanoribbons (ZGNRs) electrodes is investigated by applying nonequilibrium Green's function formalism combined with first-principles density functional theory. The calculated results show that the anchoring groups play a significant role in determining the electronic transport properties and switching behaviour of the molecular junctions. A higher current switching ratio without any oscillation can be obtained for the molecular junctions with carbon atom anchoring group, which suggests that this system has a broader application in future logic and memory devices. |
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Keywords: | Molecular switch nonequilibrium Green's function electronic transport graphene nanoribbons |
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