| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Dynamic responses of series parallel-plate mesoscopic capacitors to time-dependent external voltage |
| Wang Jin-Hua (王锦华)a, Quan Jun (全军)b |
a College of Public Administration, Huazhong University of Science and Technology, Wuhan 430074, China;
b School of Physics Science and Technology, Lingnan Normal University, Zhanjiang 524048, China |
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Abstract We investigate the dynamic responses of the series parallel-plate mesoscopic capacitors to a time-dependent external voltage. The results indicate that the quantum coherence between two capacitors strongly depends on the frequency of the external voltage and the distance between the two capacitors (c-c distance). The behaviors of the series capacitance incompletely follow the Kirchhoff’s laws; only in the low frequency case or the limit of the c-c distance, the capacitance approaches to the classical series capacitance. In addition, the real part of the frequency-dependent capacitance shows a maximum and a minimum, which appear around the peak of the imaginary part. These phenomena may be associated with the plasmon excitation in the mesoscopic capacitors.
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Received: 20 April 2015
Revised: 15 July 2015
Accepted manuscript online:
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PACS:
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73.23.-b
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(Electronic transport in mesoscopic systems)
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73.40.-c
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(Electronic transport in interface structures)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11304276), the Natural Science Foundation of Guangdong Province, China (Grant No. 2014A030307035), the Cultivation of Innovative Talents in Colleges and Universities of Guangdong Province, China (Grant No. LYM10098), and the Doctor Subject Foundation of Lingnan Normal University of China (Grant No. ZL1004). |
Corresponding Authors:
Quan Jun
E-mail: quanj@lingnan.edu.cn
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Cite this article:
Wang Jin-Hua (王锦华), Quan Jun (全军) Dynamic responses of series parallel-plate mesoscopic capacitors to time-dependent external voltage 2015 Chin. Phys. B 24 117303
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