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Photon-Assisted Electron Transport for a λ-shaped Carbon Nanotube Junction |
| JIANG Lian-Jun1,2;LIAO Wen-Hu2;ZHOU Guang-Hui2 |
| 1Department of Physics and Electronic Engineering, Hunan City College, Yiyang 4130002Department of Physics, Hunan Normal University, Changsha 410081 |
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| Cite this article: |
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JIANG Lian-Jun, LIAO Wen-Hu, ZHOU Guang-Hui 2008 Chin. Phys. Lett. 25 1836-1839 |
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Abstract We theoretically study the electron transport properties for two coupled single-walled carbon nanotube quantum dots connected to metallic electrodes under the irradiation of an external electromagnetic field at low temperatures. Using the standard nonequilibrium Green's function techniques, we examine the time-averaged transmission coefficient and linear conductance. It is shown that by some numerical examples, the photon-assisted inter-dot coupling causes Fano resonance and the conductance of the system is sensitive to the external field parameters. The transport dependence on the external field parameters may be used to detect the high-frequency microwave irradiation.
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73.22.-r
73.23.-b
78.67.-n
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Received: 26 February 2008
Published: 29 April 2008
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| PACS: |
73.22.-r
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73.23.-b
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(Electronic transport in mesoscopic systems)
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78.67.-n
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(Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)
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