Agrawal, Ved Varun and Thomas, Reji and Kulkarni, G. U. and Rao, C. N. R. (2005) A single molecule switch based on two Pd nanocrystals linked by a conjugated dithiol. PRAMANA journal of physics, 65 (5). p. 769.
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Tunneling spectroscopy measurements have been carried out on a single molecule device formed by two Pd nanocrystals (dia. $\sim$5 nm) electronically coupled by a conducting molecule, dimercaptodiphenylacetylene. The $I$--$V$ data, obtained by positioning the tip over a nanocrystal electrode, exhibit negative differential resistance (NDR) on a background M-I-M characteristics. The NDR feature occurs at $\sim$0.67 V at 300 K and shifts to a higher bias of 1.93 V at 90 K. When the tip is held in the middle region of the device, a Coulomb blockade region is observed ($\pm$$\sim$0.3 V).
|Subjects:||Physical Science > Nanophysics|
Material Science > Nanochemistry
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Physics|
Faculty of Engineering, Science and Mathematics > School of Chemistry
|Deposited On:||19 Jan 2009 09:09|
|Last Modified:||19 Jan 2009 09:09|
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