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arXiv 1003.5430cond-mat.mes-hall
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聚焦离子束制备Nb纳米线的超导转变

Superconducting transition in Nb nanowires fabricated using focused ion beam

G. C. Tettamanzi, C. I. Pakes, A. Potenza, S. Rubanov, C. H. Marrows, S. Prawer

摘要:

利用聚焦镓离子束(FIB)的制造技术,Nb纳米线的低温电性能的设备尺寸的演变已被检查在一个政权,其中交叉从约瑟夫森类绝缘行为是显而易见的。电阻-温度数据的物理宽度为100 nm的顺序的设备表现出抑制超导性,导致耗散行为,被证明是一致的激活低于Tc的相滑移。这项研究表明,通过利用镓杂质中毒的FIB引入到纳米线的外围,一个中心超导相滑移纳米线与子10 nm的尺寸可以工程内的纳米线的核心。

英文摘要:

Making use of focused Ga-ion beam (FIB) fabrication technology, the evolution with device dimension of the low-temperature electrical properties of Nb nanowires has been examined in a regime where crossover from Josephson-like to insulating behaviour is evident. Resistance-temperature data for devices with a physical width of order 100 nm demonstrate suppression of superconductivity, leading to dissipative behaviour that is shown to be consistent with the activation of phase-slip below Tc. This study suggests that by exploiting the Ga-impurity poisoning introduced by the FIB into the periphery of the nanowire, a central superconducting phase-slip nanowire with sub-10 nm dimensions may be engineered within the core of the nanowire.

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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