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Designing Principles of Molecular Quantum Interference Effect Transistors

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journal contribution
posted on 2018-05-11, 00:00 authored by Shuguang Chen, GuanHua Chen, Mark A. Ratner
To explore the designing principles for the quantum interference effect transistors, a series of simulations are carried out on a 2,5-linked perylene molecular junction composed of two subsystems connected via destructive quantum interference. Simulation results suggest that the overall conductance of a large π-conjugated system is determined by its subsystem connected directly to the electrodes. A Büttiker probe can be treated as a resistor, and to first-order approximation, its effect is found equivalent to severing its surrounding bonds. These findings greatly simplify the design of molecular quantum interference effect transistors.

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