@article{277924a965f24b0380d12848d6a29704,
title = "Large-distance quantum confinement passing through a single-layer graphene",
abstract = "Constructing quantum corrals on a surface is an effective strategy for precise regulation of surface electronic states. Nevertheless, this strategy has only been demonstrated to work when the corrals are adsorbed directly on coinage metals. Herein, we report large-distance electronic state confinement passing through a single-layer graphene (SLG) by an extended molecular adlayer. Although the adlayer is 6.7 {\AA} away from Cu(111) with the graphene sheet in between, the corrals defined by the adlayer can still trap the free electron gas of the Cu surface effectively, lifting the dispersive band of Cu. The electron donated from Cu substrate to SLG is demonstrated to migrate above the SLG surface instead of accumulating at the Cu-SLG interface. The physisorbed molecular layer sharpens the dispersion of graphene electronic states. Our results open new possibilities for the design of hybrid electronic devices and graphene modification.",
keywords = "band structure, electronic state confinement, free electron gas, functional organic layer, graphene, quantum corrals, scanning tunneling microscopy, VdW interfaces",
author = "Zhuo Li and Zhaoyan Gao and Jinping Hu and Cristina Mattioli and Pengcheng Ding and Wenpeng Xu and Ye Sun and Junjie Li and Dingyong Zhong and Yudong Huang and Geng Li and Fei Song and Andr{\'e} Gourdon and Kantorovich, {Lev N.} and Flemming Besenbacher and Miao Yu",
note = "Funding Information: This work is financially supported by the National Natural Science Foundation of China ( 22272041 , 51772066 , 51991340 , and 11874380 ) and the State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology ( 2021TS08 ). Funding Information: This work is financially supported by the National Natural Science Foundation of China (22272041, 51772066, 51991340, and 11874380) and the State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (2021TS08). M.Y. G.L. and F.S. designed the project; C.M. and A.G. synthesized the BCPM compound; Z.L. fabricated SLG and BCPM molecular layer-coated SLG-Cu(111); Z.L. Z.G. P.D. and W.X. carried out STM imaging and STS analysis; F.S. Z.L. and J.H. analyzed the band structure of the samples by ARPES; L.N.K. Z.L. and P. D. performed the DFT calculations; M.Y. Z.L. F.S. G.L. L.N.K. Y.S. J.L. Y.H. and D.Z. interpreted the results; M.Y. Z.L. L.N.K. G.L. and F.S. drafted and/or revised the manuscript. The authors declare no competing interests. Publisher Copyright: {\textcopyright} 2023 The Author(s)",
year = "2023",
month = jul,
day = "19",
doi = "10.1016/j.xcrp.2023.101492",
language = "English",
volume = "4",
journal = "Cell Reports Physical Science",
issn = "2666-3864",
publisher = "Cell Press",
number = "7",
}