TY - JOUR
T1 - Gate controlling of quantum interference and direct observation of anti-resonances in single molecule charge transport
AU - Li, Yueqi
AU - Buerkle, Marius
AU - Li, Guangfeng
AU - Rostamian, Ali
AU - Wang, Hui
AU - Wang, Zixiao
AU - Bowler, David R.
AU - Miyazaki, Tsuyoshi
AU - Xiang, Limin
AU - Asai, Yoshihiro
AU - Zhou, Gang
AU - Tao, Nongjian
N1 - Publisher Copyright:
© 2019, The Author(s), under exclusive licence to Springer Nature Limited.
PY - 2019/4/1
Y1 - 2019/4/1
N2 - Quantum interference can profoundly affect charge transport in single molecules, but experiments can usually measure only the conductance at the Fermi energy. Because, in general, the most pronounced features of the quantum interference are not located at the Fermi energy, it is highly desirable to probe charge transport in a broader energy range. Here, by means of electrochemical gating, we measure the conductance and map the transmission functions of single molecules at and around the Fermi energy, and study signatures associated with constructive and destructive interference. With electrochemical gate control, we tune the quantum interference between the highest occupied molecular orbital and lowest unoccupied molecular orbital, and directly observe anti-resonance, a distinct feature of destructive interference. By tuning the molecule in and out of anti-resonance, we achieve continuous control of the conductance over two orders of magnitude with a subthreshold swing of ~17 mV dec−1, features relevant to high-speed and low-power electronics.
AB - Quantum interference can profoundly affect charge transport in single molecules, but experiments can usually measure only the conductance at the Fermi energy. Because, in general, the most pronounced features of the quantum interference are not located at the Fermi energy, it is highly desirable to probe charge transport in a broader energy range. Here, by means of electrochemical gating, we measure the conductance and map the transmission functions of single molecules at and around the Fermi energy, and study signatures associated with constructive and destructive interference. With electrochemical gate control, we tune the quantum interference between the highest occupied molecular orbital and lowest unoccupied molecular orbital, and directly observe anti-resonance, a distinct feature of destructive interference. By tuning the molecule in and out of anti-resonance, we achieve continuous control of the conductance over two orders of magnitude with a subthreshold swing of ~17 mV dec−1, features relevant to high-speed and low-power electronics.
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U2 - 10.1038/s41563-018-0280-5
DO - 10.1038/s41563-018-0280-5
M3 - Article
C2 - 30742082
AN - SCOPUS:85061382918
SN - 1476-1122
VL - 18
SP - 357
EP - 363
JO - Nature materials
JF - Nature materials
IS - 4
ER -