@article{f3ba1fce8bf44e2bb67549f4c9ca39e5,
title = "Superconducting proximity effect in a transparent van der Waals superconductor-metal junction",
abstract = "We report on Andreev reflections at clean NbSe2-bilayer graphene junctions. The high transparency of the junction, which manifests as a large conductance enhancement of up to 1.8, enables us to see clear evidence of a proximity-induced superconducting gap in bilayer graphene and two Andreev reflections through a vertical NbSe2-graphene and a lateral graphene-graphene junction, respectively. Quantum transport simulations capture the complexity of the experimental data and illuminate the impact of various microscopic parameters on the transmission of the junction. Our work establishes the practice and understanding of an all-van-der-Waals, high-performance superconducting junction. The realization of a highly transparent proximized graphene-graphene junction opens up possibilities to engineer emergent quantum phenomena.",
author = "Jing Li and Leng, {Han Bing} and Hailong Fu and Kenji Watanabe and Takashi Taniguchi and Xin Liu and Liu, {Chao Xing} and Jun Zhu",
note = "Funding Information: Work at Penn State was supported by the National Science Foundation (NSF) through Grant No. NSF-DMR-1708972 and Kaufman New Initiative research Grant No. KA2018-98553 of the Pittsburgh Foundation. H.F. acknowledges the support of the Penn State Eberly Postdoctoral Fellowship. C.-X.L. acknowledges the support from the Office of Naval Research (Grant No. N00014-18-1-2793) and Department of Energy (DOE) Grant No. (DE-SC0019064). X.L. and H.-B. L. acknowledge the support from the National Key R&D Program of China (Grant No. 2016YFA0401003) and NSFC (Grant No. 11674114). K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan and the CREST (JPMJCR15F3), JST. Publisher Copyright: {\textcopyright} 2020 American Physical Society. {\textcopyright}2020 American Physical Society.",
year = "2020",
month = may,
day = "15",
doi = "10.1103/PhysRevB.101.195405",
language = "English (US)",
volume = "101",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "19",
}