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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 31, Iss. 2 — Feb. 1, 2014
  • pp: 259–269

Quantum conductivity for metal–insulator–metal nanostructures

Joseph W. Haus, Domenico de Ceglia, Maria Antonietta Vincenti, and Michael Scalora  »View Author Affiliations


JOSA B, Vol. 31, Issue 2, pp. 259-269 (2014)
http://dx.doi.org/10.1364/JOSAB.31.000259


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Abstract

We present a methodology based on quantum mechanics for assigning quantum conductivity when an ac field is applied across a variable gap between two plasmonic nanoparticles with an insulator sandwiched between them. The quantum tunneling effect is portrayed by a set of quantum conductivity coefficients describing the linear ac conductivity responding at the frequency of the applied field, and nonlinear coefficients that modulate the field amplitude at the fundamental frequency and its harmonics. The quantum conductivity, determined with no fit parameters, has both frequency and gap dependence that can be applied to determine the nonlinear quantum effects of strong applied electromagnetic fields, even when the system is composed of dissimilar metal nanostructures. Our methodology compares well to results on quantum tunneling effects reported in the literature, and is simple to extend to a number of systems with different metals and different insulators between them.

© 2014 Optical Society of America

OCIS Codes
(190.4400) Nonlinear optics : Nonlinear optics, materials
(160.4236) Materials : Nanomaterials
(350.4238) Other areas of optics : Nanophotonics and photonic crystals
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Nonlinear Optics

History
Original Manuscript: September 23, 2013
Revised Manuscript: October 31, 2013
Manuscript Accepted: December 3, 2013
Published: January 15, 2014

Citation
Joseph W. Haus, Domenico de Ceglia, Maria Antonietta Vincenti, and Michael Scalora, "Quantum conductivity for metal–insulator–metal nanostructures," J. Opt. Soc. Am. B 31, 259-269 (2014)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-31-2-259

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