Nonadditive Transport in Multi-Channel Single-Molecule Circuits

被引：12

作者：

Chen, Li-Chuan ^{[1
]}

Zheng, Jueting ^{[2
]}

Liu, Junyang ^{[2
]}

Gong, Xiao-Ting ^{[1
]}

Chen, Zi-Zhen ^{[1
]}

Guo, Rui-Xue ^{[1
]}

Huang, Xiaoyan ^{[2
]}

Zhang, Yu-Peng ^{[1
]}

Zhang, Lei ^{[1
]}

Li, Ruihao ^{[2
]}

Shao, Xiangfeng ^{[1
]}

Hong, Wenjing ^{[2
]}

Zhang, Hao-Li ^{[1
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem SKLAOC, Lanzhou 730000, Peoples R China

[2] iChem Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

来源：

SMALL | 2020年 / 16卷 / 39期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

charge transport; molecular devices; multi-channel circuits; quantum interference; single-molecule circuits; AHARONOV-BOHM OSCILLATIONS; QUANTUM INTERFERENCE; ELECTRON-TRANSPORT; SELECTION RULE; CONDUCTANCE; TRANSMISSION; CURRENTS;

D O I：

10.1002/smll.202002808

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页数：7

共 53 条

[21] Additive Electron Pathway and Nonadditive Molecular Conductance by Using a Multipodal Bridging Compound [J].