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arXiv cond-mat/0612349cond-mat.supr-concond-mat.mtrl-sci
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结间耦合对本征约瑟夫森结中断点电流的影响

Influence of coupling between junctions on breakpoint current in intrinsic Josephson junctions

Yu. M. Shukrinov, F. Mahfouzi

摘要:

本文从理论上研究了高$T_c$超导体中本征约瑟夫森结的电流-电压特性。发现了最外侧分支上的断点电流随耦合$α$和耗散$β$参数的变化而振荡,我们解释了这种振荡是由于在断点处产生了不同波数的纵向等离子体波。我们展示了可折叠性效应,并预测了具有不同结数的叠层的电流-电压特性的组行为。本文提出了一种从断点电流的$α$ -和$β$ -依赖性确定纵向等离子体波的波数的方法。我们的模型的$α$ -和$β$ -依赖的断点电流,并获得良好的协议与模拟结果。

英文摘要:

We study theoretically the current-voltage characteristics of intrinsic Josephson junctions in high-$T_c$ superconductors. An oscillation of the breakpoint current on the outermost branch as a function of coupling $α$ and dissipation $β$ parameters is found. We explain this oscillation as a result of the creation of longitudinal plasma waves at the breakpoint with different wave numbers. We demonstrate the commensurability effect and predict a group behavior of the current-voltage characteristics for the stacks with a different number of junctions. A method to determine the wave number of longitudinal plasma waves from $α$- and $β$-dependence of the breakpoint current is suggested. We model the $α$- and $β$-dependence of the breakpoint current and obtain good agreement with the results of simulation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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