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arXiv 0907.2468cond-mat.supr-con
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粒状超导氮化铌纳米线的磁电阻振荡

Magnetoresistance Oscillations in Granular Superconducting Niobium Nitride Nanowires

U. Patel, Z. L. Xiao, A. Gurevich, S. Avci, J. Hua, R. Divan, U. Welp, W. K. Kwok

摘要:

我们报告的磁阻振荡超导NbNx纳米线通过氨气退火NbSe 3前体纳米结构的合成。尽管纳米线的横向尺寸远大于超导相干长度,但这些纳米线在低温下的电压-电流特性让人想起一维超导体,其中量子相位滑移与耗散的起源相关。我们表明,在这项工作中观察到的磁阻振荡和电压-电流特性的结果从我们的纳米线的颗粒结构。

英文摘要:

We report on magnetoresistance oscillations in superconducting NbNx nanowires synthesized through ammonia gas annealing of NbSe3 precursor nanostructures. Even though the transverse dimensions of the nanowires are much larger than the superconducting coherence length, the voltage-current characteristics of these nanowires at low temperatures are reminiscent of one-dimensional superconductors where quantum phase slips are associated with the origin of dissipation. We show that both the magnetoresistance oscillations and voltage-current characteristics observed in this work result from the granular structure of our nanowires.

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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