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A classical treatment of optical tunneling in plasmonic gaps: extending the quantum corrected model to practical situations

Open access
Esteban, Rubén, Zugarramurdi, Asier, Zhang, Pu, Nordlander, Peter, García-Vidal, Francisco J., Borisov, Andrei G., Aizpurua, Javier·2015·Faraday Discussions

Abstract

The optical response of plasmonic nanogaps is challenging to address when the separation between the two nanoparticles forming the gap is reduced to a few nanometers or even subnanometer distances. We have compared results of the plasmon response within different levels of approximation, and identified a classical local regime, a nonlocal regime and a quantum regime of interaction. For separations of a few Ångstroms, in the quantum regime, optical tunneling can occur, strongly modifying the optics of the nanogap. We have considered a classical effective model, so called Quantum Corrected Model (QCM), that has been introduced to correctly describe the main features of optical transport in plasmonic nanogaps. The basics of this model are explained in detail, and its implementation is extended to include nonlocal effects and address practical situations involving different materials and temperatures of operation.

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Metadata

Authors
Esteban, R., Zugarramurdi, A., Zhang, P., Nordlander, P., García-Vidal, F. J., Borisov, A. G., & Aizpurua, J.
Venue
Faraday Discussions
Published
2015
Volume
178
Pages
151-183
ISSN
  • 1359-6640 (ISSN-L)
  • 1364-5498
OpenAlex
W2170837376
Cited by
189
References
3
FWCI
9.44
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: A classical treatment of optical tunneling in plasmonic gaps: extending the quantum corrected model to practical situations. https://app.cochat.ai/papers/10.1039/c4fd00196f
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Esteban, R., Zugarramurdi, A., Zhang, P., Nordlander, P., García-Vidal, F. J., Borisov, A. G., & Aizpurua, J. (2015). A classical treatment of optical tunneling in plasmonic gaps: extending the quantum corrected model to practical situations. Faraday Discussions. https://doi.org/10.1039/c4fd00196f

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