2024-03-28T09:19:05Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/900782020-09-29T09:17:21Zcom_10261_115com_10261_3col_10261_368
Bridging quantum and classical plasmonics with a quantum-corrected model
Esteban, Ruben
Borisov, Andrei G.
Nordlander, Peter
Aizpurua, Javier
European Commission
Ministerio de Ciencia e Innovación (España)
Welch Foundation
Office of Naval Research (US)
Physical sciences
Nanotechnology
Optical physics
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 Unported License.
Electromagnetic coupling between plasmonic resonances in metallic nanoparticles allows for engineering of the optical response and generation of strong localized near-fields. Classical electrodynamics fails to describe this coupling across sub-nanometer gaps, where quantum effects become important owing to non-local screening and the spill-out of electrons. However, full quantum simulations are not presently feasible for realistically sized systems. Here we present a novel approach, the quantum-corrected model (QCM), that incorporates quantum-mechanical effects within a classical electrodynamic framework. The QCM approach models the junction between adjacent nanoparticles by means of a local dielectric response that includes electron tunnelling and tunnelling resistivity at the gap and can be integrated within a classical electrodynamical description of large and complex structures. The QCM predicts optical properties in excellent agreement with fully quantum mechanical calculations for small interacting systems, opening a new venue for addressing quantum effects in realistic plasmonic systems. © 2012 Macmillan Publishers Limited. All rights reserved.
R.E. and J.A. acknowledge support from the Spanish National project FIS2010-19609-C02-01, Euroinvestigación project EUI200803816 CUBiHOLE and the European FP7 project Nanoantenna (FP7-HEALTH-F5-2009-241818-NANOANTENNA). P.N. acknowledges support from the Robert A. Welch Foundation under grant C-1222 and by the office of Naval Research under grant N00244-09-1-0067.
Peer Reviewed
2014-01-29T11:18:16Z
2014-01-29T11:18:16Z
2012
2014-01-29T11:18:16Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1038/ncomms1806
e-issn: 2041-1723
Nature Communications 3: 825 (2012)
http://hdl.handle.net/10261/90078
10.1038/ncomms1806
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100004837
http://dx.doi.org/10.13039/100000006
http://dx.doi.org/10.13039/100000928
en
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/FP7/241818
http://dx.doi.org/10.1038/ncomms1806
open
Nature Publishing Group