Nonadditive Transport in Multi‐Channel Single‐Molecule Circuits
| Autor: | Zi-Zhen Chen, Rui-Xue Guo, Xiaoyan Huang, Yu-Peng Zhang, Junyang Liu, Ruihao Li, Wenjing Hong, Hao-Li Zhang, Xiangfeng Shao, Li-Chuan Chen, Xiao-Ting Gong, Lei Zhang, Jueting Zheng |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Conductance 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Interference (wave propagation) Topology 01 natural sciences 0104 chemical sciences Biomaterials Quantum interference Molecule General Materials Science Molecular circuits 0210 nano-technology Lead (electronics) Multi channel Biotechnology Electronic circuit |
| Zdroj: | Small. 16:2002808 |
| ISSN: | 1613-6829 1613-6810 |
| Popis: | As stated in the classic Kirchhoff's circuit laws, the total conductance of two parallel channels in an electronic circuit is the sum of the individual conductance. However, in molecular circuits, the quantum interference (QI) between the individual channels may lead to apparent invalidity of Kirchhoff's laws. Such an effect can be very significant in single-molecule circuits consisting of partially overlapped multiple transport channels. Herein, an investigation on how the molecular circuit conductance correlates to the individual channels is conducted in the presence of QI. It is found that the conductance of multi-channel circuit consisting of both constructive and destructive QI is significantly smaller than the addition of individual ones due to the interference between channels. In contrast, the circuit consisting of destructive QI channels exhibits an additive transport. These investigations provide a new cognition of transport mechanism and manipulation of transport in multi-channel molecular circuits. |
| Databáze: | OpenAIRE |
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