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arXiv 0811.4317cond-mat.supr-con
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约瑟夫森结阵列中零场费斯克模的相干激活

Coherent Activation of Zero-Field Fiske Modes in Arrays of Josephson Junctions

I. Ottaviani, M. Cirillo, M. Lucci, V. Merlo, M. Salvato, M. G. Castellano, G. Torrioli, F. Mueller, T. Weimann

摘要:

系列阵列的约瑟夫森结显示出一种模式的证据,在该模式中,所有的结同步振荡的电压谐振出现,在零外部磁场,在倍数的基本Fiske步骤间距。测量结果表明,谐振电流幅值随电压的增加而线性增加。通过阵列和孤立结的磁场响应研究相干模的性质,发现振荡发生在一个参数平面区域,在该区域直流磁场只激活边界电流,并发生磁通量子动力学。

英文摘要:

Series arrays of Josephson junctions show evidence of a mode in which all the junctions oscillate in synchronism on voltage resonances appearing, in zero external magnetic field, at multiples of the fundamental Fiske step spacing. The measurements show that the current amplitude of the resonances increases linearly as their voltages are summed. Investigation of the nature of the coherent mode by magnetic field responses of arrays and isolated juctions reveals that the oscillations take place in a parameter plane region where dc magnetic fields only activate boundary current and flux-quanta dynamics can take place.

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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