The electrostatic behaviour of an 1,3-Cyclobutadiene (C4H4) based Single Molecular Transistor has been investigated using the first principle calculation based on Density functional Theory and non-equilibrium Green's function approach. While the molecule is placed on top of a dielectric layer (backed by a metallic gate) and weakly coupled between the Source/Drain electrodes, the charge stability diagram revealed the presence of individual charge states in the Coulomb Blockade regime. This gets affected significantly on addition of an another gate electrode placed on the top of the molecule. This modified double-gated geometry allows additional control of the total energy of the system that is sensitive to the individual charge states of the molecule, which can be used as a charge sensing technique operational at room temperature.
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21 July 2014
Research Article|
July 17 2014
Double gated single molecular transistor for charge detection
S. J. Ray;
S. J. Ray
a)
1
CEA, INAC-SPSMS
, UMR-E CEA/UJF-Grenoble 1, 17 Rue Des Martyrs, F-38054 Grenoble Cedex 9, France
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R. Chowdhury
R. Chowdhury
2Department of Civil Engineering,
Indian Institute of Technology Roorkee
, Roorkee 247 667, India
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a)
Electronic address: ray.sjr@gmail.com
J. Appl. Phys. 116, 034307 (2014)
Article history
Received:
June 04 2014
Accepted:
July 06 2014
Citation
S. J. Ray, R. Chowdhury; Double gated single molecular transistor for charge detection. J. Appl. Phys. 21 July 2014; 116 (3): 034307. https://doi.org/10.1063/1.4890540
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