Magnetic field effect on the localized plasmon resonance in patterned noble metal nanostructures

Guan Xiang Du; Shin Saito; Migaku Takahashi

doi:10.1109/TMAG.2011.2157479

Magnetic field effect on the localized plasmon resonance in patterned noble metal nanostructures

Guan Xiang Du, Shin Saito, Migaku Takahashi

ENG - Electronic Engineering

Tohoku University

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Sizable rotation of light polarization plane induced by magnetic field when transmitting through gold nanostructures was observed which was characterized by Faraday rotation and ellipticity. The dependence of disk diameter and disk to disk distance were investigated. The plot of Faraday effect versus disk diameter showed resonant features which were associated with the excitation of localized surface plasmon (LSPR). The magnitude of Faraday rotation or ellipticity from gold nanodisks was found to be at the order of 0.01 degree at magnetic field of 1 Tesla. The MO activity was modeled by the effective medium model, resonant behavior was observed around LSPR resonance and the magnitude of experimental MO activities show good correspondence with the calculation. The results suggest active control on the plasmonic modes by external magnetic field.

Original language	English
Article number	6027741
Pages (from-to)	3167-3169
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	47
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2011.2157479
Publication status	Published - 2011 Oct

Keywords

Active plasmonics
Localized surface plasmon resonance
magneto-optical effect
nanostructures

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10.1109/TMAG.2011.2157479

Cite this

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title = "Magnetic field effect on the localized plasmon resonance in patterned noble metal nanostructures",

abstract = "Sizable rotation of light polarization plane induced by magnetic field when transmitting through gold nanostructures was observed which was characterized by Faraday rotation and ellipticity. The dependence of disk diameter and disk to disk distance were investigated. The plot of Faraday effect versus disk diameter showed resonant features which were associated with the excitation of localized surface plasmon (LSPR). The magnitude of Faraday rotation or ellipticity from gold nanodisks was found to be at the order of 0.01 degree at magnetic field of 1 Tesla. The MO activity was modeled by the effective medium model, resonant behavior was observed around LSPR resonance and the magnitude of experimental MO activities show good correspondence with the calculation. The results suggest active control on the plasmonic modes by external magnetic field.",

keywords = "Active plasmonics, Localized surface plasmon resonance, magneto-optical effect, nanostructures",

author = "Du, {Guan Xiang} and Shin Saito and Migaku Takahashi",

note = "Funding Information: This work was supported by the JSPS program for foreign researcher. The authors would like to thank Dr. K. Akahane and Mr. S. Meguro from Neoark Corp. for technical support during the setup of microscope system.",

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T1 - Magnetic field effect on the localized plasmon resonance in patterned noble metal nanostructures

AU - Du, Guan Xiang

AU - Saito, Shin

AU - Takahashi, Migaku

N1 - Funding Information: This work was supported by the JSPS program for foreign researcher. The authors would like to thank Dr. K. Akahane and Mr. S. Meguro from Neoark Corp. for technical support during the setup of microscope system.

PY - 2011/10

Y1 - 2011/10

N2 - Sizable rotation of light polarization plane induced by magnetic field when transmitting through gold nanostructures was observed which was characterized by Faraday rotation and ellipticity. The dependence of disk diameter and disk to disk distance were investigated. The plot of Faraday effect versus disk diameter showed resonant features which were associated with the excitation of localized surface plasmon (LSPR). The magnitude of Faraday rotation or ellipticity from gold nanodisks was found to be at the order of 0.01 degree at magnetic field of 1 Tesla. The MO activity was modeled by the effective medium model, resonant behavior was observed around LSPR resonance and the magnitude of experimental MO activities show good correspondence with the calculation. The results suggest active control on the plasmonic modes by external magnetic field.

AB - Sizable rotation of light polarization plane induced by magnetic field when transmitting through gold nanostructures was observed which was characterized by Faraday rotation and ellipticity. The dependence of disk diameter and disk to disk distance were investigated. The plot of Faraday effect versus disk diameter showed resonant features which were associated with the excitation of localized surface plasmon (LSPR). The magnitude of Faraday rotation or ellipticity from gold nanodisks was found to be at the order of 0.01 degree at magnetic field of 1 Tesla. The MO activity was modeled by the effective medium model, resonant behavior was observed around LSPR resonance and the magnitude of experimental MO activities show good correspondence with the calculation. The results suggest active control on the plasmonic modes by external magnetic field.

KW - Active plasmonics

KW - Localized surface plasmon resonance

KW - magneto-optical effect

KW - nanostructures

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Magnetic field effect on the localized plasmon resonance in patterned noble metal nanostructures

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Keywords

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