Quantum Mechanical study of the coupling of plasmon excitations to atomic scale electron transport
Journal article, 2011

The coupling of optical excitation and electron transport through a sodium atom in a plasmonic dimer junction is investigated using time-dependent density functional theory. The optical absorption and dynamic conductance is determined as a function of gap size. Surface plasmons are found to couple to atomic-scale transport through several different channels including dipolar, multipolar, and charge transfer plasmon modes. These findings provide insight into subnanoscale couplings of plasmons and atoms, a subject of general interest in plasmonics and molecular electronics.

surface plasmons

absorption coefficients


charge exchange


density functional theory


Peng Song

Peter Nordlander

Shiwu Gao

University of Gothenburg

Journal of Chemical Physics

0021-9606 (ISSN) 1089-7690 (eISSN)

Vol. 134 7 074701-

Subject Categories

Physical Sciences

Chemical Sciences

Condensed Matter Physics



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