Voltage-Controlled Binary Conductance Switching in Gold-4,4'-Bipyridine-Gold Single-Molecule Nanowires.
Voltage-Controlled Binary Conductance Switching in Gold-4,4'-Bipyridine-Gold Single-Molecule Nanowires.
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DOI:
10.1021/acs.jpclett.0c02185
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发表时间:
2020-10-01
期刊:
影响因子:
--
通讯作者:
Halbritter A
中科院分区:
文献类型:
--
作者:
Mezei G;Balogh Z;Magyarkuti A;Halbritter A
We investigate gold–4,4′-bipyridine–gold single-molecule junctions with the mechanically controllable break junction technique at cryogenic temperature (T = 4.2 K). We observe bistable probabilistic conductance switching between the two molecular binding configurations, influenced both by the mechanical actuation and by the applied voltage. We demonstrate that the relative dominance of the two conductance states is tunable by the electrode displacement, whereas the voltage manipulation induces an exponential speedup of both switching times. The detailed investigation of the voltage-tunable switching rates provides an insight into the possible switching mechanisms.
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