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

38 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
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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