Control of Dipolar Switches on Graphene by a Local Electric Field

Mehdi Bouatou, Cyril Chacon, Frédéric Joucken, Yann Girard, Vincent Repain, Amandine Bellec, Sylvie Rousset, Robert Sporken, Cesar González, Yannick J. Dappe, Jérôme Lagoute

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    The realization of molecular electronic devices relies on the ability to perform elementary operations with functional molecules. Molecular switches are established candidates to realize basic electronic functions and data storage. Macrocyclic molecules such as phthalocyanines and their derivatives provide a family of compounds that can be switched by external stimuli between two stable states. Using scanning tunneling microscopy, we investigated tin phthalocyanine on graphene. We show that these molecules can be reversibly switched between two states and that the interaction of their electric dipole with a local electric field drives the switching yield and direction. The control at the single-molecule level of the molecular conformation in a bidimensional lattice is then used to achieve high-density data storage.

    Original languageEnglish
    Pages (from-to)15639-15645
    Number of pages7
    JournalJournal of Physical Chemistry C: Nanomaterials and interfaces
    Issue number28
    Publication statusPublished - 16 Jul 2020


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