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A single molecule switch based on two Pd nanocrystals linked by a conjugated dithiol | | Ved Varun Agrawal
; Reji Thomas
; G.U. Kulkarni
; C.N.R. Rao
; | | Date: |
6 Jul 2005 | | Subject: | Materials Science; Mesoscopic Systems and Quantum Hall Effect | cond-mat.mtrl-sci cond-mat.mes-hall | | Abstract: | 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$0.67 V at 300 K and shifts to a higher bias of 1.93 V at 90 K. When the tip is held in the middle region of the device, a coulomb blockade region is observed ($pmsim$0.3 V). | | Source: | arXiv, cond-mat/0507147 | | Services: | Forum | Review | PDF | Favorites | |
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