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Open AccessArticle10.7498/aps.54.3962

Effects of open dangling end on the transport properties of single-wall carbon nanotubes

Qin Chen,Li Tong-Cang,Shi Qin-Wei,Wang Xiaoping,(1)中国科学技术大学合肥微尺度物质科学国家实验室，合肥 230026; (2)中国科学技术大学物理系，合肥 230026; (3)中国科学技术大学物理系，合肥 230026;中国科学技术大学合肥微尺度物质科学国家实验室，合肥 230026-2005-01-01-Acta Physica Sinica
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TL;DRAbstract

The effects of the dangling end on the electronic transport properties of the single-wall carbon nanotubes (CNTs) have been investigated, based on the tight-binding model and Landau formula. It is found that the conductance oscillates per iodically near the Fermi energy in the CNT with a finite-length open dangling en d. Both slow and rapid oscillations occur in armchair CNTs, but only the rapid o scillation appears in zigzag ones. The period of the rapid oscillation decreases with increasing the length of the dangling end. Moreover, the mean conductance of the CNTs with finite-length open dangling end is about twice as that with inf inite-length open dangling end. Some relevant application is also discussed.

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The effects of the dangling end on the electronic transport properties of the single-wall carbon nanotubes (CNTs) have been investigated, based on the tight-binding model and Landau formula. It is found that the conductance oscillates per iodically near the Fermi energy in the CNT with a finite-length open dangling en d. Both slow and rapid oscillations occur in armchair CNTs, but only the rapid o scillation appears in zigzag ones. The period of the rapid oscillation decreases with increasing the length of the dangling end. Moreover, the mean conductance of the CNTs with finite-length open dangling end is about twice as that with inf inite-length open dangling end. Some relevant application is also discussed.

Keywords

ZigzagCarbon nanotubeConductanceMaterials scienceDangling bondOscillation (cell signaling)Condensed matter physicsNanotechnology

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