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

Michael C. Chong, Gaël Reecht, Hervé Bulou, Alex Boeglin, Fabrice Scheurer, Fabrice Mathevet, and Guillaume Schull
Phys. Rev. Lett. 116, 036802 – Published 21 January 2016
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Abstract

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 1.5eV 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.

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  • Received 12 September 2015

DOI:https://doi.org/10.1103/PhysRevLett.116.036802

© 2016 American Physical Society

Physics Subject Headings (PhySH)

  1. Physical Systems
Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Michael C. Chong1, Gaël Reecht1, Hervé Bulou1, Alex Boeglin1, Fabrice Scheurer1, Fabrice Mathevet2, and Guillaume Schull1,*

  • 1Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504 (CNRS—Université de Strasbourg), 67034 Strasbourg, France
  • 2Institut Parisien de Chimie Moléculaire, Chimie des polymères, UMR 8232, CNRS—Université Pierre et Marie Curie, 94200 Ivry sur Seine, France

  • *guillaume.schull@ipcms.unistra.fr

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Issue

Vol. 116, Iss. 3 — 22 January 2016

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