A method for determining the specific capacitance value of mesoscopic Josephson junctions

Sheng Shiuan Yeh; Kuan Wen Chen; Tao Hsiang Chung; Dai Yang Wu; Ming Chou Lin; Jyh Yang Wang; I. Lin Ho; Cen Shawn Wu; Watson Kuo; Chiidong Chen

doi:10.1063/1.4769999

A method for determining the specific capacitance value of mesoscopic Josephson junctions

Sheng Shiuan Yeh, Kuan Wen Chen, Tao Hsiang Chung, Dai Yang Wu, Ming Chou Lin, Jyh Yang Wang, I. Lin Ho, Cen Shawn Wu, Watson Kuo, Chiidong Chen^*

^*此作品的通信作者

國際半導體產業學院

研究成果: Article › 同行評審

3 引文斯高帕斯（Scopus）

摘要

An approach for precise determination of capacitance values and energy level spacing of mesoscopic Josephson junctions is proposed. Quantized levels arising from plasma oscillation manifest themselves in the current peaks in the current-voltage characteristics of a nearby probe Josephson junction. From peak spacing, the specific capacitance of aluminum junctions is determined to be 35 fF/μm². In addition, magnetic field dependence of quantum states can be described quantitatively by a theory that takes the effect of field induced surface current into account.

原文	English
文章編號	232602
期刊	Applied Physics Letters
卷	101
發行號	23
DOIs	https://doi.org/10.1063/1.4769999
出版狀態	Published - 3 12月 2012

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10.1063/1.4769999

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AU - Yeh, Sheng Shiuan

AU - Chen, Kuan Wen

AU - Chung, Tao Hsiang

AU - Wu, Dai Yang

AU - Lin, Ming Chou

AU - Wang, Jyh Yang

AU - Ho, I. Lin

AU - Wu, Cen Shawn

AU - Kuo, Watson

AU - Chen, Chiidong

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N2 - An approach for precise determination of capacitance values and energy level spacing of mesoscopic Josephson junctions is proposed. Quantized levels arising from plasma oscillation manifest themselves in the current peaks in the current-voltage characteristics of a nearby probe Josephson junction. From peak spacing, the specific capacitance of aluminum junctions is determined to be 35 fF/μm2. In addition, magnetic field dependence of quantum states can be described quantitatively by a theory that takes the effect of field induced surface current into account.

AB - An approach for precise determination of capacitance values and energy level spacing of mesoscopic Josephson junctions is proposed. Quantized levels arising from plasma oscillation manifest themselves in the current peaks in the current-voltage characteristics of a nearby probe Josephson junction. From peak spacing, the specific capacitance of aluminum junctions is determined to be 35 fF/μm2. In addition, magnetic field dependence of quantum states can be described quantitatively by a theory that takes the effect of field induced surface current into account.

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VL - 101

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 23

M1 - 232602

ER -

A method for determining the specific capacitance value of mesoscopic Josephson junctions

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