Narrow-Line Single-Molecule Transducer between Electronic Circuits and Surface Plasmons

Michael C. Chong, Gaël Reecht, Hervé Bulou, Alex Boeglin, Fabrice Scheurer, Fabrice Mathevet, Guillaume Schull

Research output: Contribution to journalArticlepeer-review

73 Citations (Scopus)


A molecular wire containing an emitting molecular center is controllably suspended between the plasmonic electrodes of a cryogenic scanning tunneling microscope. Passing current through this circuit generates an ultranarrow-line emission at an energy of ≈1.5 eV which is assigned to the fluorescence of the molecular center. Control over the linewidth is obtained by progressively detaching the emitting unit from the surface. The recorded spectra also reveal several vibronic peaks of low intensities that can be viewed as a fingerprint of the emitter. Surface plasmons localized at the tip-sample interface are shown to play a major role in both excitation and emission of the molecular excitons.

Original languageEnglish
Article number036802
JournalPhysical review letters
Issue number3
Publication statusPublished - Jan 21 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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