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arXiv 1202.4774cond-mat.mes-hallcond-mat.supr-con
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graphene-NbTiN结的零偏压电导峰和约瑟夫森效应

Zero-bias conductance peak and Josephson effect in graphene-NbTiN junctions

Mihai Popinciuc, Victor E. Calado, Xing L. Liu, Anton R. Akhmerov, Teun M. Klapwijk, Lieven M. K. Vandersypen

摘要:

我们报告的电子传输测量接触NbTiN电极,在低温下保持超导高达至少11特斯拉的石墨烯。在一个单一的超导接触的设备,我们发现在零偏置的电导,我们解释在无反射隧穿的两倍以上的增强。在具有两个超导接触的器件中,我们观察到了约瑟夫森效应、双极超电流和夫琅和费斑图。

英文摘要:

We report electronic transport measurements of graphene contacted by NbTiN electrodes, which at low temperature remain superconducting up to at least 11 Tesla. In devices with a single superconducting contact, we find a more than twofold enhancement of the conductance at zero bias, which we interpret in terms of reflectionless tunneling. In devices with two superconducting contacts, we observe the Josephson effect, bipolar supercurrents and Fraunhofer patterns.

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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