TY - JOUR
T1 - Enhanced Magneto-Optical Activities of Modulated Fe - Pt Multilayer Metamaterials
AU - Tomita, Satoshi
AU - Suwa, Tomomi
AU - Riego, Patricia
AU - Berger, Andreas
AU - Hosoito, Nobuyoshi
AU - Yanagi, Hisao
N1 - Funding Information:
The authors thank A. Yoshida, T. Kodama, and K. Nakayama for valuable discussions. This work is supported by JSPS KAKENHI (Grants No. 26287065, No. 16K04881, and No. 17K19034). Work at CIC nanoGUNE is supported by the Spanish Ministry of Economy, Industry and Competitiveness under the Maria de Maeztu Units of Excellence Programme (Grant No. MDM-2016-0618) and Project No. FIS2015-64519-R (MINECO/FEDER). P.R. acknowledges “la Caixa” Foundation (Grant No. ID 100010434) for her Ph.D. fellowship.
Publisher Copyright:
© 2019 American Physical Society.
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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U2 - 10.1103/PhysRevApplied.11.064010
DO - 10.1103/PhysRevApplied.11.064010
M3 - Article
AN - SCOPUS:85067357427
VL - 11
JO - Physical Review Applied
JF - Physical Review Applied
SN - 2331-7019
IS - 6
M1 - 064010
ER -