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Sequential Electron Transport and Vibrational Excitations in an Organic Molecule Coupled to Few-Layer Graphene Electrodes
Burzurí, Enrique; Island, Joshua O; Díaz-Torres, Raúl; Fursina, Alexandra; González-Campo, A.; Roubeau, Olivier; Teat, Simon J; Aliaga, N. (Núria); Ruiz, Eliseo; van der Zant, Herre S. J
Universitat de Barcelona
Graphene electrodes are promising candidates to improvereproducibility and stability in molecular electronics through new electrode−molecule anchoring strategies. Here we report sequentialelectron transport in few-layer graphene transistors containing individualcurcuminoid-based molecules anchored to the electrodes via π −π orbital bonding. We show the coexistence of inelastic co-tunneling excitations with single-electron transport physics due to an intermediate molecule−electrode coupling; we argue that an intermediate electron−phononcoupling is the origin of these vibrational-assisted excitations. Theseexperimental observations are complemented with density functionaltheory calculations to model electron transport and the interaction between electrons and vibrational modes of thecurcuminoid molecule. We find that the calculated vibrational modes of the molecule are in agreement with theexperimentally observed excitations
Electrònica molecular
Grafè
Elèctrodes
Molecular electronics
Graphene
Electrodes
(c) American Chemical Society , 2016
Artículo
info:eu-repo/semantics/acceptedVersion
American Chemical Society
         

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