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Chinese Physics, 2002, Vol. 11(7): 720-724    DOI: 10.1088/1009-1963/11/7/314
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Shapiro effect in mesoscopic LC circuit

Ji Ying-Hua (嵇英华), Luo Hai-Mei (罗海梅), Ouyang Chu-Ying (欧阳楚英), Lei Min-Sheng (雷敏生)
Department of Physics, Jiangxi Normal University, Nanchang 330027, China
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.
Keywords:  mesoscopic LC circuit      Coulomb blockade      single electron tunnelling effect      Shapiro current step  
Received:  02 January 2002      Revised:  28 February 2002      Accepted manuscript online: 
PACS:  73.23.Hk (Coulomb blockade; single-electron tunneling)  
  74.50.+r (Tunneling phenomena; Josephson effects)  
Fund: Project supported by the Natural Science Foundation of Jiangxi Province, China (Grant No 001004).

Cite this article: 

Ji Ying-Hua (嵇英华), Luo Hai-Mei (罗海梅), Ouyang Chu-Ying (欧阳楚英), Lei Min-Sheng (雷敏生) Shapiro effect in mesoscopic LC circuit 2002 Chinese Physics 11 720

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