Enhancement of Quantum Current in Mesoscopic Coupled Rings

Chin. Phys. Lett.

2004, Vol. 21

Issue (11): 2267-2270 DOI:

Original Articles

Enhancement of Quantum Current in Mesoscopic Coupled Rings

JI Ying-Hua^1,2;LUO Hai-Mei^1,2;HU Ju-Ju^1,2;LIU Gang^1,2

¹Department of Physics, Jiangxi Normal University, Nanchang 330027 ²Key Laboratory of Optoelectronic & Telecommunication of Jiangxi Province, Jiangxi Normal University, Nanchang 330027

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JI Ying-Hua, LUO Hai-Mei, HU Ju-Ju et al 2004 Chin. Phys. Lett. 21 2267-2270

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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.

Keywords: 73.23.-b 73.63.Nm

Published: 01 November 2004

PACS:	73.23.-b	(Electronic transport in mesoscopic systems)
	73.63.Nm	(Quantum wires)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2004/V21/I11/02267

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