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.

引用

页数：5