Revealing molecular orbital gating by transition voltage spectroscopy
Recently, Song et al. [Nature 462, 1039 (2009)] employed transition voltage spectroscopy to demonstrate that the energy εH of the highest occupied molecular orbital (HOMO) of single-molecule transistors can be controlled by a gate potential VG. To demonstrate the linear dependence εH−VG, the experim...
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| Main Author: | |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
11 August 2010
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| In: |
Chemical physics
Year: 2010, Volume: 377, Issue: 1, Pages: 15-20 |
| DOI: | 10.1016/j.chemphys.2010.08.009 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.chemphys.2010.08.009 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0301010410003794 
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| Author Notes: | Ioan Bâldea |
| Summary: | Recently, Song et al. [Nature 462, 1039 (2009)] employed transition voltage spectroscopy to demonstrate that the energy εH of the highest occupied molecular orbital (HOMO) of single-molecule transistors can be controlled by a gate potential VG. To demonstrate the linear dependence εH−VG, the experimental data have been interpreted by modeling the molecule as an energy barrier spanning the spatial source-drain region of molecular junctions. Since, as shown in this work, that crude model cannot quantitatively describe the measured I-V-characteristics, it is important to get further support for the linear dependence of εH on VG. The results presented here, which have been obtained within a model of a point-like molecule, confirm this linear dependence. Because the two models rely upon complementary descriptions, the present results indicate that the interpretation of the experimental results as evidence for a gate controlled HOMO is sufficiently general. |
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| Item Description: | Gesehen am 25.11.2022 |
| Physical Description: | Online Resource |
| DOI: | 10.1016/j.chemphys.2010.08.009 |