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Roles of lattice cooling on local heating in metal-molecule-metal junctions
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) A schematic illustration of current-carrying single BDT molecule connected to two Au electrodes subjected to a dc bias voltage . (b) Typical conductance curves obtained at . denotes lifetime of BDT single molecule junctions. (c) Conductance histograms constructed from curves showing clear steps at below . (d) plotted as a function of . Error bars are full width at half maximum of single molecule peaks in linear conductance histograms obtained by Gaussian fitting. A broken line indicates single molecule conductance at room temperatures reported in Ref. 9.

Image of FIG. 2.
FIG. 2.

(a) Lifetime histograms of BDT single molecule junctions. Arrows point to peak lifetime . Solid curves are the Gaussian fit to the lifetime distributions. (b) Plots of as a function of . (c) estimated from in (a) assuming . Red solid line and blue dashed line are the theoretical curves calculated from Eq. (1) in text with and , respectively. (d) plots showing at .

Image of FIG. 3.
FIG. 3.

(a) characteristics measured at 77 K. Broken line is a linear fit to the curve at . (b) spectra at 77 K (blue) and 293 K (red). Broken line (purple) is a linear fit to the plots at 77 K in a bias range of .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Roles of lattice cooling on local heating in metal-molecule-metal junctions