Enhancement of Quantum Current in Mesoscopic Coupled Rings
JI Ying-Hua1,2, LUO Hai-Mei1,2, HU Ju-Ju1,2, LIU Gang1,2
1Department of Physics, Jiangxi Normal University, Nanchang 330027
2Key Laboratory of Optoelectronic & Telecommunication of Jiangxi Province, Jiangxi Normal University, Nanchang 330027
Enhancement of Quantum Current in Mesoscopic Coupled Rings
JI Ying-Hua1,2;LUO Hai-Mei1,2;HU Ju-Ju1,2;LIU Gang1,2
1Department of Physics, Jiangxi Normal University, Nanchang 330027
2Key Laboratory of Optoelectronic & Telecommunication of Jiangxi Province, Jiangxi Normal University, Nanchang 330027
Abstract： We discuss the relationship between external magnetic field and persistent currents of three mesoscopic-coupled rings with charge discreteness. Through numerical calculation and analysis, it is found that the properties of the persistent currents depend on both external magnetic flux and coupled factors. The positive coupling between the rings will decrease the persistent currents when 0 < m < 1 with m being the coupling coefficient. The quantum current magnification effect appearing in the rings is also investigated.
JI Ying-Hua;LUO Hai-Mei;HU Ju-Ju;LIU Gang;. Enhancement of Quantum Current in Mesoscopic Coupled Rings[J]. 中国物理快报, 2004, 21(11): 2267-2270.
JI Ying-Hua, LUO Hai-Mei, HU Ju-Ju, LIU Gang,. Enhancement of Quantum Current in Mesoscopic Coupled Rings. Chin. Phys. Lett., 2004, 21(11): 2267-2270.
2004, Vol. 21 
