Nano Archive

The gating efficiency of single-molecule transistors

Kaun, Chao-Cheng and Seideman, Tamar (2006) The gating efficiency of single-molecule transistors. JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE, 3 (6). pp. 951-956.

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Using self-consistent first principles calculations, we study the gating efficiency of fullerene-based single-molecule transistors. We find that the efficiency depends sensitively on the geometry of the gate electrode and on the contact coupling between the molecule and the source and drain electrodes. In particular, a 4-rectangles gate electrode that surrounds the junction is substantially more effective than a conventional single-rectangle gate electrode. As the coupling strength of the molecule to the source-drain electrode is reduced, the underlying molecular orbitals localize in space and are more readily shifted, giving rise to enhanced gating efficiency.

Item Type:Article
Uncontrolled Keywords:single-molecule transistor; gating efficiency; nonequilibrium Green function; approach; molecular electronics; fullerene junction
Subjects:Physical Science > Nano objects
Physical Science > Nanoelectronics
Engineering > Nanotechnology applications in ICT
ID Code:2914
Deposited By:Farnush Anwar
Deposited On:13 Jan 2009 11:02
Last Modified:13 Jan 2009 11:02

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