Oligothiophene nanorings as electron resonators for whispering gallery modes

Gaël Reecht, Hervé Bulou, Fabrice Scheurer, Virginie Speisser, Bernard Carrière, Fabrice Mathevet, Guillaume Schull

    Research output: Contribution to journalArticlepeer-review

    35 Citations (Scopus)

    Abstract

    Structural and electronic properties of oligothiophene nanowires and rings synthesized on a Au(111) surface are investigated by scanning tunneling microscopy. The spectroscopic data of the linear and cyclic oligomers show remarkable differences which, to a first approximation, can be accounted by considering electronic state confinement to one-dimensional boxes having, respectively, fixed and periodic boundary conditions. A more detailed analysis shows that polythiophene must be treated as a ribbon (i.e., having an effective width) rather than a purely 1D structure. A fascinating consequence is that the molecular nanorings act as whispering gallery mode resonators for electrons, opening the way for new applications in quantum electronics.

    Original languageEnglish
    Article number056802
    JournalPhysical review letters
    Volume110
    Issue number5
    DOIs
    Publication statusPublished - Jan 29 2013

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy(all)

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