Quantum-corrected transient analysis of plasmonic nanostructures

Ismail E. Uysal; H. Arda Ulku; Muhammad Sajjad; Nirpendra Singh; Udo Schwingenschlögl; Hakan Bagci

doi:10.1364/OE.25.005891

Quantum-corrected transient analysis of plasmonic nanostructures

Ismail E. Uysal, H. Arda Ulku, Muhammad Sajjad, Nirpendra Singh, Udo Schwingenschlögl, Hakan Bagci

Research output: Journal Publication › Article › peer-review

2 Citations (Scopus)

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 language	English
Pages (from-to)	5891-5908
Number of pages	18
Journal	Optics Express
Volume	25
Issue number	6
DOIs	https://doi.org/10.1364/OE.25.005891
Publication status	Published - 20 Mar 2017
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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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.",

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AU - Uysal, Ismail E.

AU - Ulku, H. Arda

AU - Sajjad, Muhammad

AU - Singh, Nirpendra

AU - Schwingenschlögl, Udo

AU - Bagci, Hakan

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AB - 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.

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Quantum-corrected transient analysis of plasmonic nanostructures

Abstract

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