Electron Transport Properties of Atomic Carbon Nanowires between Graphene Electrodes.
Long, stable, and free-standing linear atomic carbon wires (carbon chains) have been carved out from graphene recently [Meyer et at. Nature (London) 2008, 454, 319; Jin et at. Phys. Rev. Left. 2009, 102, 205501]. They can be considered as extremely narrow graphene nanoribbons or extremely thin carbo...
| Publicado en: | Journal of the American Chemical Society Vol. 132; no. 33; pp. 11481 - 11487 |
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| Autores principales: | , , , , , |
| Formato: | Artículo |
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American Chemical Society
8/25/2010
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=53380703&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 53380703 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 8/25/2010 vid: 132 iid: 33 pid: 997 pub: American Chemical Society artinfo: ui: 53380703 10.1021/Ja909531c ppf: 11481 ppct: 6 formats: tig: atl: Electron Transport Properties of Atomic Carbon Nanowires between Graphene Electrodes. aug: au: Shen, Lei Zeng, Minggang Yang, Shuo-Wang Zhang, Chun Wang, Xuefeng Yuanping Feng affil: Department of Physics, 2 Science Drive 3, National University of Singapore, Singapore 117542, Singapore Institute of High Performance Computing, 1 Fusionopolis Way, 16-16 Connexis, Singapore 138632, Singapore NanoCore, 5A Engineering Drive 4, National University of Singapore, Singapore 117576, Singapore Department of Physics, Soochow University, Suzhou 215006, China su: Electric wire Electron transport Graphene Carbon electrodes Field-effect transistors Green's functions Density functionals sug: subj: Electric wire Electron transport Graphene Carbon electrodes Field-effect transistors Green's functions Density functionals ab: Long, stable, and free-standing linear atomic carbon wires (carbon chains) have been carved out from graphene recently [Meyer et at. Nature (London) 2008, 454, 319; Jin et at. Phys. Rev. Left. 2009, 102, 205501]. They can be considered as extremely narrow graphene nanoribbons or extremely thin carbon nanotubes. It might even be possible to make use of high-strength and identical (without chirality) carbon wires as a transport channel or on-chip interconnects for field-effect transistors. Here we investigate electron transport properties of linear atomic carbon wire-graphene junctions by combining nonequilibrium Green's function with density functional theory. For short wires, linear ballistic transport is observed in wires consisting of odd numbers of carbon atoms but not in those consisting of even numbers of carbon atoms. For wires longer than 2.1 nm as fabricated above, however, the ballistic conductance of carbon wire-graphene junctions is independent of the structural distortion, structural imperfections, and hydrogen impurity adsorbed on the linear carbon wires, except for oxygen impurity adsorption under a low bias. As such, the epoxy groups might be the origin of experimentally observed low conductance in the carbon chain. Moreover, double-atomic carbon chains exhibit a negative differential resistance effect. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2010 holdings: @attributes: islocal: N |
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