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arXiv · 1301.4860

Oligothiophene nano-rings as electron resonators for whispering gallery modes

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

Structural and electronic properties of oligothiophene nano-wires 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 states confinement to one-dimensional (1D) 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 nano-rings act as whispering gallery mode resonators for electrons, opening the way for new applications in quantum-electronics.

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Gaël Reecht, Hervé Bulou, Fabrice Scheurer, Virginie Speisser, Bernard Carrière, Fabrice Mathevet, Guillaume Schull. 2013-01-21. Oligothiophene nano-rings as electron resonators for whispering gallery modes. https://doi.org/10.1103/physrevlett.110.056802

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