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  Nanometer-Scale Lateral p–n Junctions in Graphene/α-RuCl3 Heterostructures

Rizzo, D. J., Shabani, S., Jessen, B. S., Zhang, J., McLeod, A. S., Rubio-Verdú, C., et al. (2022). Nanometer-Scale Lateral p–n Junctions in Graphene/α-RuCl3 Heterostructures. Nano Letters, 22(5), 1946-1953. doi:10.1021/acs.nanolett.1c04579.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0009-7CE3-C Version Permalink: https://hdl.handle.net/21.11116/0000-000B-F539-1
Genre: Journal Article

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Supporting Information: Additional details about sample fabrication, STM and AFM topography, auxiliary STS and s-SNOM data, experimental and theoretical methods, and derivations for models of the near-field data
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 Creators:
Rizzo, D. J.1, Author
Shabani, S.1, Author
Jessen, B. S.1, 2, Author
Zhang, J.3, 4, Author           
McLeod, A. S.1, Author
Rubio-Verdú, C.1, Author
Ruta, F. L.1, 5, Author
Cothrine, M.6, Author
Yan, J.6, 7, Author
Mandrus, D. G.6, 7, Author
Nagler, S. E.8, Author
Rubio, A.3, 4, 9, 10, Author           
Hone, J. C.2, Author
Dean, C. R.1, Author
Pasupathy, A. N.1, 11, Author
Basov, D. N.1, Author
Affiliations:
1Department of Physics, Columbia University, New York, ou_persistent22              
2Department of Mechanical Engineering, Columbia University, New York, ou_persistent22              
3Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
4Center for Free-Electron Laser Science, ou_persistent22              
5Department of Applied Physics and Applied Mathematics, Columbia University, New York, ou_persistent22              
6Department of Materials Science and Engineering, University of Tennessee, Knoxville, ou_persistent22              
7Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, ou_persistent22              
8Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, ou_persistent22              
9Center for Computational Quantum Physics, Flatiron Institute, New York, ou_persistent22              
10Nano-Bio Spectroscopy Group, Universidad del País Vasco UPV/EHU, ou_persistent22              
11Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, ou_persistent22              

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Free keywords: scanning tunneling microscopy, scanning tunneling spectroscopy, scanning near-field optical microscopy, plasmons, two-dimensional materials, charge transfer
 Abstract: The ability to create nanometer-scale lateral p–n junctions is essential for the next generation of two-dimensional (2D) devices. Using the charge-transfer heterostructure graphene/α-RuCl3, we realize nanoscale lateral p–n junctions in the vicinity of graphene nanobubbles. Our multipronged experimental approach incorporates scanning tunneling microscopy (STM) and spectroscopy (STS) and scattering-type scanning near-field optical microscopy (s-SNOM) to simultaneously probe the electronic and optical responses of nanobubble p–n junctions. Our STM/STS results reveal that p–n junctions with a band offset of ∼0.6 eV can be achieved with widths of ∼3 nm, giving rise to electric fields of order 108 V/m. Concurrent s-SNOM measurements validate a point-scatterer formalism for modeling the interaction of surface plasmon polaritons (SPPs) with nanobubbles. Ab initio density functional theory (DFT) calculations corroborate our experimental data and reveal the dependence of charge transfer on layer separation. Our study provides experimental and conceptual foundations for generating p–n nanojunctions in 2D materials.

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Language(s): eng - English
 Dates: 2022-02-092021-11-272022-02-282022-03-09
 Publication Status: Issued
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: arXiv: 2111.06933
DOI: 10.1021/acs.nanolett.1c04579
 Degree: -

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Project name : -
Grant ID : 886291
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)
Project name : -
Grant ID : 844271
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)
Project name : Research at Columbia University was supported as part of the Energy Frontier Research Center on Programmable Quantum Materials funded by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), under Award No DE-SC0019443. Plasmonic nano-imaging at Columbia University was supported by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), under Award No DE-SC0018426. J.Z. and A.R. were supported by the European Research Council (ERC-2015-AdG694097), the Cluster of Excellence “Advanced Imaging of Matter” (AIM) EXC 2056-390715994, funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under RTG 2247, Grupos Consolidados (IT1249-19), and SFB925 “Light induced dynamics and control of correlated quantum systems”. J.Z. and A.R. would like to acknowledge Nicolas Tancogne-Dejean and Lede Xian for fruitful discussions and also acknowledge support by the Max Planck Institute-New York City Center for Non-Equilibrium Quantum Phenomena. The Flatiron Institute is a division of the Simons Foundation. J.Z. acknowledges funding received from the European Union Horizon 2020 research and innovation programme under Marie Skłodowska-Curie Grant Agreement 886291 (PeSD-NeSL). STM support was provided by the National Science Foundation via Grant DMR-2004691. C.R.-V. acknowledges funding from the European Union Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement 844271. D.G.M. acknowledges support from the Gordon and Betty Moore Foundation’s EPiQS Initiative, Grant GBMF9069. J.Q.Y. was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. S.E.N. acknowledges support from the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Division of Scientific User Facilities. Work at University of Tennessee was supported by NSF Grant 180896.
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Source 1

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Title: Nano Letters
  Abbreviation : Nano Lett.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 22 (5) Sequence Number: - Start / End Page: 1946 - 1953 Identifier: ISSN: 1530-6984
CoNE: https://pure.mpg.de/cone/journals/resource/110978984570403