Tuning charge and correlation effects for a single molecule on a graphene device
- Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
- Univ. of California, Berkeley, CA (United States). Dept. of Physics; National Univ. of Singapore (Singapore). Dept. of Chemistry. Centre for Advanced 2D Materials and Graphene Research
- Univ. of California, Berkeley, CA (United States). Dept. of Physics; Imperial College, London (United Kingdom). Dept. of Materials
- Univ. of California, Berkeley, CA (United States). Dept. of Physics
- Univ. of California, Berkeley, CA (United States). Dept. of Physics; Technical Univ. of Munich, Garching (Germany). Dept. of Physics
- Univ. of California, Berkeley, CA (United States). Dept. of Physics; Freie Univ., Berlin (Germany). Dahlem Center for Complex Quantum Systems. Dept. of Physics
- National Inst. for Materials Science (NIMS), Tsukuba (Japan)
- Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Kavli Energy NanoSciences Inst., Berkeley, CA (United States)
- National Univ. of Singapore (Singapore). Centre for Advanced 2D Materials and Graphene Research. Dept. of Physics
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.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); Ministry of Education, Culture, Sports, Science and Technology (MEXT) (Japan); Japan Society for the Promotion of Science (JSPS); National Research Foundation (NRF) (Singapore); Engineering and Physical Sciences Research Council (EPSRC); Austrian Science Fund (FWF)
- Grant/Contract Number:
- AC02-05CH11231; DMR-1206512; DRM-1508412; R-144-000-295-281; EP/N005244/1; J3026-N16
- OSTI ID:
- 1411644
- Journal Information:
- Nature Communications, Vol. 7; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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