Quantum-corrected transient analysis of plasmonic nanostructures

Ismail Enes Uysal, Huseyin Arda Ulku, Muhammad Sajjad, Nirpendra Singh, Udo Schwingenschlögl, Hakan Bagci

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

A time domain surface integral equation (TD-SIE) solver is developed for quantum-corrected analysis of transient electromagnetic field interactions on plasmonic nanostructures with sub-nanometer gaps. “Quantum correction” introduces an auxiliary tunnel to support the current path that is generated by electrons tunneled between the nanostructures. The permittivity of the auxiliary tunnel and the nanostructures is obtained from density functional theory (DFT) computations. Electromagnetic field interactions on the combined structure (nanostructures plus auxiliary tunnel connecting them) are computed using a TD-SIE solver. Time domain samples of the permittivity and the Green function required by this solver are obtained from their frequency domain samples (generated from DFT computations) using a semi-analytical method. Accuracy and applicability of the resulting quantum-corrected solver scheme are demonstrated via numerical examples.
Original languageEnglish (US)
Pages (from-to)5891
JournalOptics Express
Volume25
Issue number6
DOIs
StatePublished - Mar 6 2017

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