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Electronic Transport for a Quantum Wire Partly Irradiated under THz Electromagnetic Wave |
| YANG Mou1;ZHOU Guang-Hui1,2 |
| 1Department of Physics, Hunan Normal University, Changsha 410081
2International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015 |
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| Cite this article: |
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YANG Mou, ZHOU Guang-Hui 2003 Chin. Phys. Lett. 20 901-904 |
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Abstract We study the electronic transport of a quantum wire partly irradiated under an external terahertz (THz) electromagnetic field. Using the free-electron model and scattering matrix approach we demonstrate that although the electrons in a ballistic quantum wire only suffer from lateral collision with photons, the reflection of electrons also takes place. More interestingly there is a sharp step-structure in the transmission probability as the total energy of electron increases to a threshold value when the frequency of electromagnetic field is resonant with the separation of lateral levels of the wire. The interference structure of transmission for the system apparently appears when the field only irradiates the middle part of the wire.
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| Keywords:
73.23.-b
72.40.+w
78.67.Lt
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Published: 01 June 2003
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| PACS: |
73.23.-b
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(Electronic transport in mesoscopic systems)
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72.40.+w
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(Photoconduction and photovoltaic effects)
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78.67.Lt
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(Quantum wires)
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