Quantum mechanical study of the coupling of plasmon excitations to atomic-scale electron transport

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 t...

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Bibliographic Details
Published inThe Journal of chemical physics Vol. 134; no. 7; pp. 074701 - 074701-5
Main Authors Song, Peng, Nordlander, Peter, Gao, Shiwu
Format Journal Article
LanguageEnglish
Published United States American Institute of Physics 21.02.2011
Subjects
ABSORPTION
absorption coefficients
ALKALI METALS
ATOMS
CALCULATION METHODS
CHARGE EXCHANGE
Chemical Sciences
Condensed Matter Physics
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Den kondenserade materiens fysik
DENSITY FUNCTIONAL METHOD
density functional theory
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITONS
FERMIONS
FUNCTIONS
Fysik
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
Kemi
LEPTONS
MECHANICS
METALS
Physical Sciences
plasmonics
PLASMONS
QUANTUM MECHANICS
QUASI PARTICLES
SODIUM
SORPTION
surface plasmons
SURFACES
TIME DEPENDENCE
VARIATIONAL METHODS
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Summary: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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0021-9606
1089-7690
1089-7690
DOI:10.1063/1.3554420