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Nonadditive Transport in Multi‐Channel Single‐Molecule Circuits
Author(s) -
Chen LiChuan,
Zheng Jueting,
Liu Junyang,
Gong XiaoTing,
Chen ZiZhen,
Guo RuiXue,
Huang Xiaoyan,
Zhang YuPeng,
Zhang Lei,
Li Ruihao,
Shao Xiangfeng,
Hong Wenjing,
Zhang HaoLi
Publication year - 2020
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202002808
Subject(s) - conductance , electronic circuit , interference (communication) , channel (broadcasting) , molecule , chemical physics , materials science , constructive , nanotechnology , topology (electrical circuits) , chemistry , physics , computer science , condensed matter physics , electrical engineering , quantum mechanics , telecommunications , engineering , process (computing) , operating system
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.