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Gated electronic currents modulation and designs of logic gates with single molecular field effect transistors

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6 Author(s)
Xu, Yuqing ; School of Physics and Microelectronics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People''s Republic of China ; Fang, Changfeng ; Cui, Bin ; Ji, Guomin
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The electronic transport properties of a gated single 1,3-benzenedithiol molecular device are studied by using nonequilibrium Green's function in combination with density functional theory, which is hoped to complement the experiments. The results show that the external transverse gate electrodes can effectively tune the electronic transport properties of the molecular devices. Negative differential resistance behaviors are observed almost at the same source-drain bias when applied different gate voltages. Mechanisms are proposed for these phenomena. Designs of using one gated molecular device to realize five basic logic gates are also put forward.

Published in:

Applied Physics Letters  (Volume:99 ,  Issue: 4 )

Date of Publication:

Jul 2011

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