Please use this identifier to cite or link to this item: https://doi.org/10.1038/ncomms13553
Title: Tuning charge and correlation effects for a single molecule on a graphene device
Authors: Wickenburg, S
Lu, J 
Lischner, J
Tsai, H.-Z
Omrani, A.A
Riss, A
Karrasch, C
Bradley, A
Jung, H.S
Khajeh, R
Wong, D
Watanabe, K
Taniguchi, T
Zettl, A
Neto, A.H.C 
Louie, S.G
Crommie, M.F
Keywords: graphene
carbon
correlation
electron
electronic equipment
instrumentation
nanotechnology
polarization
Article
atomic force microscopy
chemical structure
correlation analysis
electric potential
electron
energy
field effect transistor
hydrogen bond
molecular interaction
polarization
scanning tunneling microscopy
Issue Date: 2016
Publisher: Nature Publishing Group
Citation: Wickenburg, S, Lu, J, Lischner, J, Tsai, H.-Z, Omrani, A.A, Riss, A, Karrasch, C, Bradley, A, Jung, H.S, Khajeh, R, Wong, D, Watanabe, K, Taniguchi, T, Zettl, A, Neto, A.H.C, Louie, S.G, Crommie, M.F (2016). Tuning charge and correlation effects for a single molecule on a graphene device. Nature Communications 7 : 13553. ScholarBank@NUS Repository. https://doi.org/10.1038/ncomms13553
Abstract: The ability to understand and control the electronic properties of individual molecules in a device environment is crucial for developing future technologies at the nanometre scale and below. Achieving this, however, requires the creation of three-terminal devices that allow single molecules to be both gated and imaged at the atomic scale. We have accomplished this by integrating a graphene field effect transistor with a scanning tunnelling microscope, thus allowing gate-controlled charging and spectroscopic interrogation of individual tetrafluoro-tetracyanoquinodimethane molecules. We observe a non-rigid shift in the molecule's lowest unoccupied molecular orbital energy (relative to the Dirac point) as a function of gate voltage due to graphene polarization effects. Our results show that electron-electron interactions play an important role in how molecular energy levels align to the graphene Dirac point, and may significantly influence charge transport through individual molecules incorporated in graphene-based nanodevices. © The Author(s) 2016.
Source Title: Nature Communications
URI: https://scholarbank.nus.edu.sg/handle/10635/174911
ISSN: 20411723
DOI: 10.1038/ncomms13553
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