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arXiv cond-mat/0011237cond-mat.supr-con
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单排和双排三角形约瑟夫森结单元的共振

Resonances in one and two rows of triangular Josephson junction cells

P. Caputo, M. V. Fistul, A. V. Ustinov

摘要:

我们提出了一个实验和分析研究的共振的电流-电压特性的单排和双排三角形约瑟夫森阵列。的磁场依赖的电压位置的谐振已被测量为各种电池电感和结的临界电流。在双列阵列中,我们观察到一种特殊的共振现象,其电压位置随磁场的增大而减小。我们推导出线性电磁波在阵列中传播的频谱。在双行阵列中,频谱由许多分支组成,这些分支的不同之处在于横向于偏置电流方向的约瑟夫森结的行为。测量的磁场依赖的谐振电压被映射到线性模式的频谱和实验和模型之间的良好协议。

英文摘要:

We present an experimental and analytical study of resonances in the current-voltage characteristics of single and double row triangular Josephson arrays. The magnetic field dependences of the voltage positions of the resonances have been measured for various cell inductances and junction critical currents. In double row arrays, we have observed a peculiar resonance, whose voltage position decreases with magnetic field. We derive the spectrum of linear electromagnetic waves propagating in the arrays. In the double row array, the spectrum consists of many branches that differ by the behavior of the Josephson junctions transverse to the bias current direction. The measured magnetic field dependence of the resonance voltages is mapped to the linear mode spectrum and good agreement between experiments and model is found.

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