Enhanced Magneto-Optical Activities of Modulated Fe - Pt Multilayer Metamaterials

Satoshi Tomita; Tomomi Suwa; Patricia Riego; Andreas Berger; Nobuyoshi Hosoito; Hisao Yanagi

doi:10.1103/PhysRevApplied.11.064010

Enhanced Magneto-Optical Activities of Modulated Fe - Pt Multilayer Metamaterials

Satoshi Tomita, Tomomi Suwa, Patricia Riego, Andreas Berger, Nobuyoshi Hosoito, Hisao Yanagi

Division of Developmental Research in Education Programs

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

2 Citations (Scopus)

Abstract

We study optical and magneto-optical (MO) properties of epitaxially grown modulated Fe-Pt multilayer metamaterials by means of generalized MO ellipsometry (GME). Large Kerr rotation, ellipticity, and MO coupling parameters in the visible and near-infrared regions are obtained for modulated metamaterials, in which the stacking sequences follow an inverse Fibonacci series. In contrast, periodic multilayers show small MO parameters, although they otherwise exhibit magnetic and optical properties that are very similar to those for the modulated metamaterials. The present study demonstrates that specific thickness modulation can have a significant materials design potential for one-dimensional magnetic metamaterials.

Original language	English
Article number	064010
Journal	Physical Review Applied
Volume	11
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevApplied.11.064010
Publication status	Published - 2019 Jun 5

ASJC Scopus subject areas

Physics and Astronomy(all)

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abstract = "We study optical and magneto-optical (MO) properties of epitaxially grown modulated Fe-Pt multilayer metamaterials by means of generalized MO ellipsometry (GME). Large Kerr rotation, ellipticity, and MO coupling parameters in the visible and near-infrared regions are obtained for modulated metamaterials, in which the stacking sequences follow an inverse Fibonacci series. In contrast, periodic multilayers show small MO parameters, although they otherwise exhibit magnetic and optical properties that are very similar to those for the modulated metamaterials. The present study demonstrates that specific thickness modulation can have a significant materials design potential for one-dimensional magnetic metamaterials.",

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AU - Tomita, Satoshi

AU - Suwa, Tomomi

AU - Riego, Patricia

AU - Berger, Andreas

AU - Hosoito, Nobuyoshi

AU - Yanagi, Hisao

PY - 2019/6/5

Y1 - 2019/6/5

N2 - We study optical and magneto-optical (MO) properties of epitaxially grown modulated Fe-Pt multilayer metamaterials by means of generalized MO ellipsometry (GME). Large Kerr rotation, ellipticity, and MO coupling parameters in the visible and near-infrared regions are obtained for modulated metamaterials, in which the stacking sequences follow an inverse Fibonacci series. In contrast, periodic multilayers show small MO parameters, although they otherwise exhibit magnetic and optical properties that are very similar to those for the modulated metamaterials. The present study demonstrates that specific thickness modulation can have a significant materials design potential for one-dimensional magnetic metamaterials.

AB - We study optical and magneto-optical (MO) properties of epitaxially grown modulated Fe-Pt multilayer metamaterials by means of generalized MO ellipsometry (GME). Large Kerr rotation, ellipticity, and MO coupling parameters in the visible and near-infrared regions are obtained for modulated metamaterials, in which the stacking sequences follow an inverse Fibonacci series. In contrast, periodic multilayers show small MO parameters, although they otherwise exhibit magnetic and optical properties that are very similar to those for the modulated metamaterials. The present study demonstrates that specific thickness modulation can have a significant materials design potential for one-dimensional magnetic metamaterials.

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