Electronic transport properties of zigzag carbon- and boron-nitride-nanotube heterostructures |
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| Authors: | P. Zhao D.S. Liu Y. Zhang Y. Su H.Y. Liu S.J. Li G. Chen |
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| Affiliation: | 1. School of Physics and Technology, University of Jinan, Jinan 250022, China;2. School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;3. Department of Physics, Jining University, Qufu 273155, China;1. Department of Chemistry, Payame Noor University, P.O. Box 19395-3697, Tehran, Iran;2. Department of Engineering Science, College of Engineering, University of Tehran, P.O. Box 11365-4563, Tehran, Iran;1. Ulyanovsk State University, Ulyanovsk, Russia;2. Institute of Nanotechnology of Microelectronics of the Russian Academy of Sciences (INME RAS), Moscow, Russia;1. Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany;2. Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany;3. School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China |
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| Abstract: | Using first-principles density functional theory and non-equilibrium Green's function formalism for quantum transport calculation, we have investigated the electronic transport properties of heteronanotubes by joining a zigzag (6,0) carbon nanotube and a zigzag (6,0) boron nitride nanotube with different atomic compositions and joint configurations. Our results show that the atomic composition and joint configuration affect strongly the electronic transport properties. Obvious negative differential resistance behavior and large rectifying behavior are obtained in the heterostructure with certain composition and joint configuration. Moreover, tube length and tube radius can affect strongly the observed NDR and rectifying behaviors. The observed negative differential resistance and rectifying behaviors are explained in terms of the evolution of the transmission spectrum with applied bias combined with molecular projected self-consistent Hamiltonian states analysis. |
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