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

Journal Article · Sun Jun 21 00:00:00 EDT 2015 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.4922490· OSTI ID:22415989

Gao, Shiwu ^[1]

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1. Beijing Computational Science Research Center, Zhongguancun Software Park II, 100094, Beijing (China)

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.

• OSTI ID: 22415989
• Journal Information: Journal of Chemical Physics, Vol. 142, Issue 23; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

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