skip to main content

Title: Nonlinear response of metal nanoparticles: Double plasmon excitation and electron transfer

We investigate the dynamical response of a metal nanoparticle and the electron transfer to a molecule near its surface using time-dependent density functional theory. In addition to the linear response of the Mie resonance, double plasmon excitations and a low-frequency charge transfer band emerge and become prominent at high laser intensities. Both modes are nonlinear processes, which are derived from the re-excitation and decay of the primary plasmon mode, respectively. Our results shed light on the localised characters of the plasmon-molecule coupling and hot electron distributions. These findings have general implications to photoinduced phenomena in nanosystems.
Authors:
 [1]
  1. Beijing Computational Science Research Center, Zhongguancun Software Park II, 100094, Beijing (China)
Publication Date:
OSTI Identifier:
22415989
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 142; Journal Issue: 23; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; COUPLING; DENSITY FUNCTIONAL METHOD; ELECTRON TRANSFER; ELECTRONS; EXCITATION; LASER RADIATION; METALS; MOLECULES; NANOPARTICLES; NONLINEAR PROBLEMS; PLASMONS; TIME DEPENDENCE; VISIBLE RADIATION