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Title: Raman scattering enhanced by plasmonic clusters and its application to single-molecule imaging

The optical response of the linear Au{sub 8} cluster is investigated by the linear response theory based on the density functional theory. It is revealed that the observed many peaks in the visible region originate from the interaction of the ideal plasmonic excitation along the molecular axis with the background d-electron excitations, i.e., the Landau damping. In spite of the existence of the damping, the Raman scattering is shown to be enhanced remarkably by the incident light resonant to the visible excitations. The novel imaging experiment with the atomic resolution is proposed by utilizing a plasmonic cluster as the probing tip.
Authors:
 [1] ;  [2] ;  [3] ;  [2]
  1. The Open University of Japan, Wakaba 2-11, Mihama-ku, Chiba 261-8586 (Japan)
  2. (Japan)
  3. Institute for Molecular Science and SOKENDAI, Nishigonaka 38, Okazaki, 444-8585 (Japan)
Publication Date:
OSTI Identifier:
22499159
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1702; Journal Issue: 1; Conference: ICCMSE 2015: International conference of computational methods in sciences and engineering 2015, Athens (Greece), 20-23 Mar 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATOMIC CLUSTERS; D STATES; DENSITY FUNCTIONAL METHOD; ELECTRONS; EXCITATION; GOLD; IMAGES; LANDAU DAMPING; MOLECULES; PEAKS; PROBES; RAMAN EFFECT; RESOLUTION