| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Fano Resonance Effect in CO-Adsorbed Zigzag Graphene Nanoribbons |
| Gao Wang1, Meng-Qiu Long2**, Dan Zhang2,3 |
1Advanced Research Center, Central South University, Changsha 410083
2Institute of Super Microstructure and Ultrafast Process, Central South University, Changsha 410083
3School of Science, Hunan University of Technology, Zhuzhou 412007
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| Cite this article: |
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Gao Wang, Meng-Qiu Long, Dan Zhang 2017 Chin. Phys. Lett. 34 097303 |
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Abstract Quantum interference plays an important role in tuning the transport property of nano-devices. Using the non-equilibrium Green's Function method in combination with density functional theory, we investigate the influence to the transport property of a CO molecule adsorbed on one edge of a zigzag graphene nanoribbon device. Our results show that the CO molecule-adsorbed zigzag graphene nanoribbon devices can exhibit the Fano resonance phenomenon. Moreover, the distance between CO molecules and zigzag graphene nanoribbons is closely related to the energy sites of the Fano resonance. Our theoretical analyses indicate that the Fano resonance would be attributed to the interaction between CO molecules and the edge of the zigzag graphene nanoribbon device, which results in the localization of electrons and significantly changes the transmission spectrum.
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Received: 05 June 2017
Published: 15 August 2017
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| PACS: |
73.20.Fz
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(Weak or Anderson localization)
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73.22.Pr
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(Electronic structure of graphene)
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73.50.Bk
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(General theory, scattering mechanisms)
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| Fund: Supported by the National Natural Science Foundation of China under Grant No 21673296, the Science and technology Plan of Hunan Province under Grant No 2015RS4002, and the Hunan Provincial Natural Science Foundation under Grant No 2017JJ3063. |
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