Andreev reflection and tunneling spectrum on metal-superconductor-metal junctions

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• 作者：Jiajun Ouyang (1)
  W. LiMing (1) wliming@scnu.edu.cn
  Liangbin Hu (1)
• 关键词：Andreev reflection – ; superconductivity
• 刊名：Frontiers of Physics
• 出版年：2012
• 出版时间：August 2012
• 年：2012
• 卷：7
• 期：4
• 页码：449-452
• 全文大小：490.1 KB
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• 作者单位：1. Department of Physics, and Laboratory of Quantum Information Technology, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, 510006 China
• ISSN：2095-0470

文摘

The tunneling spectrum of an electron and a hole in metal-superconductor-metal junctions is computed using the Blonder-Tinkham-Klapwijk method. using the Blonder-Tinkham-Klapwijk method. The incident and the outgoing currents finally balance each other by an interface charge inside the superconductor and metal junction. balance each other by an interface charge inside the superconductor and metal junction. The present computation shows a more abundant structure compared to that on a metal-superconductor junction, such as the resonance at bias voltages above the energy gap of the superconductor. such as the resonance at bias voltages above the energy gap of the superconductor. The density of the interface charge shows a quantum-like oscillation. of the interface charge shows a quantum-like oscillation.