Observation of supercurrent in PbIn-graphene-PbIn Josephson junction

被引：72
|
作者：
Jeong, Dongchan [2 ]
Choi, Jae-Hyun [2 ]
Lee, Gil-Ho [2 ]
Jo, Sanghyun [2 ,3 ]
Doh, Yong-Joo [1 ]
Lee, Hu-Jong [2 ,3 ]
机构：
[1] Korea Univ, Dept Display & Semicond Phys, Jochiwon 339700, Chungnam, South Korea
[2] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea
[3] Natl Ctr Nanomat Technol, Pohang 790784, South Korea
来源：
PHYSICAL REVIEW B | 2011年 / 83卷 / 09期
关键词：
QUANTUM INTERFERENCE DEVICE; PHASE; CONDUCTANCE; TRANSISTORS;
D O I：
10.1103/PhysRevB.83.094503
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Superconductor-graphene-superconductor (SGS) junction provides a unique platform to study relativistic electrodynamics of Dirac fermions in graphene combined with proximity-induced superconductivity. We report the observation of the Josephson effect in proximity-coupled superconducting junctions of graphene in contact with Pb1-xInx (x = 0.07) electrodes for temperatures as high as T = 4.8 K, with a large value of IcRN (similar to 255 mu V). This demonstrates that Pb1-xInx SGS junction would facilitate the development of the superconducting quantum information devices and superconductor-enhanced phase-coherent transport of graphene.
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页数：5
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