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首页> 外文期刊>Superconductor Science & Technology >Zero-field steps and coherent emission of externally heated long Josephson junctions
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Zero-field steps and coherent emission of externally heated long Josephson junctions

机译：零场阶梯和外部加热长的Josephson结的相干排放

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摘要

IV-characteristics of stacks of two inductively interacting long Josephson junctions with the homogeneous and inhomogeneous distributions of critical currents were investigated numerically. It was assumed that the inhomogeneous linear distribution of critical currents along the junction was created by heating of one end of the stack. Even zero-field steps were found in the IV-curve of the stack with the homogeneous distribution of critical currents, whereas odd zero-field steps appeared in the IV-curve of the stack with the heated end. Due to the inductive interaction between junctions in a stack of two junctions, each of the zero-field steps splits into two steps which correspond to frequencies of collective excitations in the system. Strong coherent emission was found at the step which corresponds to the frequency of in-phase oscillations.
机译：在数值上研究了两种电感相互作用的堆叠的堆叠的堆叠的特征。 假设通过加热堆叠的一端来产生沿着结的关键电流的非均匀线性分布。 甚至在具有均匀分布的临界电流的堆叠的IV曲线中发现甚至零场步骤，而奇数零场步骤出现在具有加热端的堆叠的IV曲线中。 由于两个结堆叠中的结合之间的电感相互作用，每个零场步骤分成两个步骤，其对应于系统中的集体激励频率。 在对应于同相振荡的频率的步骤中发现了强烈的相干发射。

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