| Shapiro effect in mesoscopic LC circuit |
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| 作者姓名： | 嵇英华 罗海梅 欧阳楚英 雷敏生 |
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| 作者单位： | Department of Physics, Jiangxi Normal University, Nanchang 330027, China;Department of Physics, Jiangxi Normal University, Nanchang 330027, China;Department of Physics, Jiangxi Normal University, Nanchang 330027, China;Department of Physics, Jiangxi Normal University, Nanchang 330027, China |
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| 基金项目： | Project supported by the Natural Science Foundation of Jiangxi Province, China (Grant No 001004). |
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| 摘 要： | In this paper we consider the movement of an electron in the single electron tunnel process through a mesoscopic capacitor. The results show that, due to the Coulomb force, there is a threshold voltage Vt in the mesoscopic LC circuit. When the external voltage is lower than the threshold voltage, the tunnel current value is zero, and the Coulomb blockade phenomenon arises. Furthermore, considering that the mesoscopic dimension is comparable to the coherence length in which charge carriers retain the phase remembrance, a weak coupling can be produced through the proximity effect of the normal metal electrons of both electrodes of a mesoscopic capacitor. By varying the external voltage, we can observe the Shapiro current step on the current－voltage characteristic curve of a mesoscopic LC circuit.
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| 关 键 词： | 微电子学 介观LC电路 Shapiro效应 |
| 收稿时间： | 1/2/2002 12:00:00 AM |
Shapiro effect in mesoscopic LC circuit |
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| Ji Ying-Hu,Luo Hai-Mei,Ouyang Chu-Ying and Lei Min-Sheng.Shapiro effect in mesoscopic LC circuit[J].Chinese Physics B,2002,11(7):720-724. |
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| Authors: | Ji Ying-Hu Luo Hai-Mei Ouyang Chu-Ying and Lei Min-Sheng |
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| Institution: | Department of Physics, Jiangxi Normal University, Nanchang 330027, China |
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| Abstract: | In this paper we consider the movement of an electron in the single electron tunnel process through a mesoscopic capacitor. The results show that, due to the Coulomb force, there is a threshold voltage Vt in the mesoscopic LC circuit. When the external voltage is lower than the threshold voltage, the tunnel current value is zero, and the Coulomb blockade phenomenon arises. Furthermore, considering that the mesoscopic dimension is comparable to the coherence length in which charge carriers retain the phase remembrance, a weak coupling can be produced through the proximity effect of the normal metal electrons of both electrodes of a mesoscopic capacitor. By varying the external voltage, we can observe the Shapiro current step on the current－voltage characteristic curve of a mesoscopic LC circuit. |
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| Keywords: | mesoscopic LC circuit Coulomb blockade single electron tunnelling effect Shapiro current step |
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