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Title: Quantum mechanical identification of quadrupolar plasmonic excited states in silver nanorods

Abstract

Quadrupolar plasmonic modes in noble metal nanoparticles have gained interest in recent years for various sensing applications. Although quantum mechanical studies have shown that dipolar plasmons can be modeled in terms of excited states where several to many excitations contribute coherently to the transition dipole moment, new approaches are needed to identify the quadrupolar plasmonic states. We show that quadrupolar states in Ag nanorods can be identified using the semiempirical INDO/SCI approach by examining the quadrupole moment of the transition density. The main longitudinal quadrupolar states occur at higher energies than the longitudinal dipolar states, in agreement with previous classical electrodynamics results, and have collective plasmonic character when the nanorods are sufficiently long. In conclusion, the ability to identify these states will make it possible to evaluate the differences between dipolar and quadrupolar plasmons that are relevant for sensing applications.

Authors:
 [1];  [1];  [1]
  1. Northwestern Univ., Evanston, IL (United States)
Publication Date:
Research Org.:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1332126
Grant/Contract Number:  
FG02-10ER16153
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Physical Chemistry. A, Molecules, Spectroscopy, Kinetics, Environment, and General Theory
Additional Journal Information:
Journal Volume: 120; Journal Issue: 46; Journal ID: ISSN 1089-5639
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; silver nanorod; plasmon; quadrupole mode; INDO

Citation Formats

Gieseking, Rebecca L., Ratner, Mark A., and Schatz, George C. Quantum mechanical identification of quadrupolar plasmonic excited states in silver nanorods. United States: N. p., 2016. Web. doi:10.1021/acs.jpca.6b09649.
Gieseking, Rebecca L., Ratner, Mark A., & Schatz, George C. Quantum mechanical identification of quadrupolar plasmonic excited states in silver nanorods. United States. https://doi.org/10.1021/acs.jpca.6b09649
Gieseking, Rebecca L., Ratner, Mark A., and Schatz, George C. 2016. "Quantum mechanical identification of quadrupolar plasmonic excited states in silver nanorods". United States. https://doi.org/10.1021/acs.jpca.6b09649. https://www.osti.gov/servlets/purl/1332126.
@article{osti_1332126,
title = {Quantum mechanical identification of quadrupolar plasmonic excited states in silver nanorods},
author = {Gieseking, Rebecca L. and Ratner, Mark A. and Schatz, George C.},
abstractNote = {Quadrupolar plasmonic modes in noble metal nanoparticles have gained interest in recent years for various sensing applications. Although quantum mechanical studies have shown that dipolar plasmons can be modeled in terms of excited states where several to many excitations contribute coherently to the transition dipole moment, new approaches are needed to identify the quadrupolar plasmonic states. We show that quadrupolar states in Ag nanorods can be identified using the semiempirical INDO/SCI approach by examining the quadrupole moment of the transition density. The main longitudinal quadrupolar states occur at higher energies than the longitudinal dipolar states, in agreement with previous classical electrodynamics results, and have collective plasmonic character when the nanorods are sufficiently long. In conclusion, the ability to identify these states will make it possible to evaluate the differences between dipolar and quadrupolar plasmons that are relevant for sensing applications.},
doi = {10.1021/acs.jpca.6b09649},
url = {https://www.osti.gov/biblio/1332126}, journal = {Journal of Physical Chemistry. A, Molecules, Spectroscopy, Kinetics, Environment, and General Theory},
issn = {1089-5639},
number = 46,
volume = 120,
place = {United States},
year = {Thu Oct 27 00:00:00 EDT 2016},
month = {Thu Oct 27 00:00:00 EDT 2016}
}

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Cited by: 13 works
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Works referencing / citing this record:

Atomistic electrodynamics simulations of plasmonic nanoparticles
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Effects of oxidation on the plasmonic properties of aluminum nanoclusters
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Quantum Plasmonic Nanoantennas
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