Quantum Coherent Multielectron Processes in an Atomic Scale Contact

Peter-Jan Peters; Fei Xu; Kristen Kaasbjerg; Gianluca Rastelli; Wolfgang Belzig; Richard Berndt

doi:10.1103/PhysRevLett.119.066803

Quantum Coherent Multielectron Processes in an Atomic Scale Contact

Peter-Jan Peters, Fei Xu, Kristen Kaasbjerg, Gianluca Rastelli, Wolfgang Belzig, Richard Berndt

Center for Nanostructured Graphene

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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 hv > 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.

Original language	English
Article number	066803
Journal	Physical Review Letters
Volume	119
Issue number	6
Number of pages	5
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.119.066803
Publication status	Published - 2017

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COFUNDPostdocDTU: COFUNDPostdocDTU
Præstrud, M. R. (Project Participant) & Brodersen, S. W. (Project Participant)
01/01/2014 → 31/12/2019
Project: Research

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title = "Quantum Coherent Multielectron Processes in an Atomic Scale Contact",

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 hv > 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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AU - Belzig, Wolfgang

AU - Berndt, Richard

PY - 2017

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AB - 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 hv > 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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Quantum Coherent Multielectron Processes in an Atomic Scale Contact

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