https://scholars.lib.ntu.edu.tw/handle/123456789/573453
標題: | Localized surface electromagnetic waves in CrI3-based magnetophotonic structures | 作者: | Pervishko A.A., Yudin D., Gudelli V.K., Delin A., Eriksson O., Guo G.-Y. GUANG-YU GUO |
關鍵字: | Calculations; Circular waveguides; Electromagnetic wave polarization; Electromagnetic waves; Magnetic anisotropy; Plasmons; Shims; Silica; Surface plasmon resonance; Tensors; Ab initio calculations; Conductivity tensors; Electromagnetic properties; Kretschmann-Raether configuration; Magnetic field distribution; Reflectance spectrum; Surface electromagnetic waves; Surface plasmon polaritons; Chromium compounds | 公開日期: | 2020 | 卷: | 28 | 期: | 20 | 起(迄)頁: | 29155-29165 | 來源出版物: | Optics Express | 摘要: | Resulting from strong magnetic anisotropy two-dimensional ferromagnetism was recently shown to be stabilized in chromium triiodide, CrI3, in the monolayer limit. While its properties remain largely unexplored, it provides a unique material-specific platform to unveil its electromagnetic properties associated with coupling of modes. Indeed, trigonal symmetry in the presence of out-of-plane magnetization results in a non-trivial structure of the conductivity tensor, including the off-diagonal terms. In this paper, we study the surface electromagnetic waves localized in a CrI3-based structure using the results of ab initio calculations for the CrI3 conductivity tensor. In particular, we provide an estimate for the critical angle corresponding to the surface plasmon polariton generation in the Kretschmann-Raether configuration by a detailed investigation of reflectance spectrum as well as the magnetic field distribution for different CrI3 layer thicknesses. We also study the bilayer structure formed by two CrI3 layers separated by a SiO2 spacer and show that the surface plasmon resonance can be achieved at the interface between CrI3 and air depending on the spacer thickness. ? 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092510172&doi=10.1364%2fOE.394113&partnerID=40&md5=503e0857168bdbba9a50dfc1205c7559 https://scholars.lib.ntu.edu.tw/handle/123456789/573453 |
ISSN: | 10944087 | DOI: | 10.1364/OE.394113 |
顯示於: | 物理學系 |
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