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Negative Differential Resistance in Atomic Carbon Chain-Graphene Junctions |
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| Authors: | AN Li-Ping LIU Chun-Mei LIU Nian-Hua |
| Institution: | 1. Institute for Advanced Study, Nanchang University, Nanchang 330031, China; 2. Department of Physics, Nanchang University, Nanchang 330031, China; 3. Department of Physics, Yanshan University, Qinhuangdao 066004, China; 4. Fundamental Department, Academy of Amored Force Engineering, Beijing 100072, China |
| Abstract: | We investigate the electronic transport properties of atomic carbon chain-graphene junctions by using the density-functional theory combining with the non-equilibrium Green's functions. The results show that the transport properties are sensitively dependent on the contact geometry of carbon chain. From the calculated I-V curve we find negative differential resistance (NDR) in the two types of junctions. The NDR can be considered as a result of molecular orbitals moving related to the bias window. |
| Keywords: | atomic carbon chain-graphene junctions electronic transport negative differential resistance molecular orbitals |
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