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Single-electron counting spectroscopy: Simulation study of porphyrin in a molecular junction

par Welack, Sven;Maddox, Jeremy J.B.;Esposito, Massimiliano ;Harbola, Upendra;Mukamel, Shaul
Référence Nano letters, 8, 4, page (1137-1141)
Publication Publié, 2008-04

Article révisé par les pairs

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Résumé :

Electron counting of a single porphyrin molecule between two electrodes shows a crossover from sub-to super-Poissonian statistics as the bias voltage is scanned. This is attributed to the simultaneous activation of states with electron transfer rates spanning several orders of magnitude. Time-series analysis of consecutive single-electron transfer events reveals fast and slow transport channels, which are not resolved by the average current alone. © 2008 American Chemical Society.