American Chemical Society
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Metal−Molecule Interface Fluctuations

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journal contribution
posted on 2020-05-07, 09:58 authored by Chenggang Tao, T. J. Stasevich, William G. Cullen, T. L. Einstein, Ellen D. Williams
We have created self-assembled circular chains of C60 laterally bound to a layer of Ag atoms as a model system for characterizing fluctuations at a metal−molecule interface. STM measurements show that the Ag and C60 sides of the interface fluctuate independently, with frequency-dependent amplitudes of magnitude 0.1 nm at ∼1 Hz for the Ag edge and ∼0.01 Hz for the C60 ring. The measured frequency spectra of the metal and molecule fluctuation amplitudes will contribute characteristic signatures to transport measurements involving such interfaces.