Dependence of Switching Current Distribution of a Current-Biased Josephson Junction on Microwave Frequency
ZHAI Ji-Quan, LI Yong-Chao, SHI Jian-Xin, ZHOU Yu, LI Xiao-Hu, XU Wei-Wei** , SUN Guo-Zhu** , WU Pei-Heng
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093
Abstract ：We investigate the distribution of the switching current of a current-biased Josephson junction (CBJJ) and its dependence on the microwave frequency using two theoretical methods, one of which is the quantum trajectory method and the other is the master equation method. Both the methods show that the distribution of the switching current of CBJJ will exhibit double peaks in a certain range of microwave frequency if proper microwave power is given, and the gap between the two peaks will increase with the microwave frequency. The obtained results can be used to identify the energy difference of the ground and first excited states in a Josephson junction for any bias current.
收稿日期: 2015-01-19
出版日期: 2015-04-30
:
74.50.+r
(Tunneling phenomena; Josephson effects)
03.65.Sq
(Semiclassical theories and applications)
05.45.-a
(Nonlinear dynamics and chaos)
引用本文:
. [J]. 中国物理快报, 2015, 32(4): 47402-047402.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/32/4/047402
或
https://cpl.iphy.ac.cn/CN/Y2015/V32/I4/47402
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Hamidreza Emamipour1* , Jafar Emamipour2 . Zero-Bias Conductance versus Potential Strength of Interface in Ferromagnetic Superconductors
2015, Vol. 32 
