Quantum Coherent Multielectron Processes in an Atomic Scale Contact

Peter-Jan Peters, Fei Xu, Kristen Kaasbjerg, Gianluca Rastelli, Wolfgang Belzig, and Richard Berndt
Phys. Rev. Lett. 119, 066803 – Published 10 August 2017
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Abstract

The light emission from a scanning tunneling microscope operated on a Ag(111) surface at 6 K is analyzed from low conductances to values approaching the conductance quantum. Optical spectra recorded at sample voltages V reveal emission with photon energies hν>2eV. A model of electrons interacting coherently via a localized plasmon-polariton mode reproduces the experimental data, in particular, the kinks in the spectra at eV and 2eV as well as the scaling of the intensity at low and intermediate conductances.

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  • Received 12 April 2017

DOI:https://doi.org/10.1103/PhysRevLett.119.066803

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Peter-Jan Peters1, Fei Xu2, Kristen Kaasbjerg3, Gianluca Rastelli2, Wolfgang Belzig2, and Richard Berndt1,*

  • 1Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, 24098 Kiel, Germany
  • 2Fachbereich Physik, Universität Konstanz, 78457 Konstanz, Germany
  • 3Center for Nanostructured Graphene, Department of Micro- and Nanotechnology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark

  • *berndt@physik.uni-kiel.de

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Issue

Vol. 119, Iss. 6 — 11 August 2017

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