Numerical simulation of split ring resonator near-fields and antiferromagnetic magnon hybridization

IF 2.8 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Express Pub Date : 2024-02-12 DOI:10.1364/ome.510831

Daniel M. Heligman, Alex M. Potts, and R. Valdés Aguilar

引用次数: 0

Abstract

We report on the results of finite difference time domain (FDTD) simulations of the terahertz response of a split ring resonator (SRR) metamaterial coupled to a hypothetical antiferromagnetic material (AFM) characterized by a magnon resonance. We find a hybridization of the SRR’s local magnetic field and the magnon, which manifests as an avoided crossing in the far-field transmission spectrum. We show that the strong light-matter coupling can be modelled via a two coupled oscillator model. We further evaluate the SRR-AFM coupling strength by varying the physical separation with a dielectric spacer between them. We find strong coupling for spacers thinner than 3 μm, suggesting far-field transmission measurements of metamaterial near-fields to be a versatile platform to investigate magnetic excitations of quantum materials.

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分环谐振器近场和反铁磁磁子杂化的数值模拟

我们报告了有限差分时域（FDTD）模拟的结果，模拟了与假想反铁磁材料（AFM）耦合的分裂环谐振器（SRR）超材料的太赫兹响应，该材料的特点是磁子共振。我们发现了 SRR 的局部磁场与磁子的杂化，表现为远场透射谱中的避免交叉。我们表明，强光-物质耦合可以通过两个耦合振荡器模型来模拟。我们进一步评估了 SRR-AFM 的耦合强度，方法是改变它们之间的电介质间隔的物理间隔。我们发现厚度小于 3 μm 的间隔物具有很强的耦合性，这表明超材料近场的远场透射测量是研究量子材料磁激发的多功能平台。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Materials Express MATERIALS SCIENCE, MULTIDISCIPLINARY-OPTICS

CiteScore

5.50

自引率

3.60%

发文量

377

审稿时长

1.5 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optical Materials Express (OMEx), OSA''s open-access, rapid-review journal, primarily emphasizes advances in both conventional and novel optical materials, their properties, theory and modeling, synthesis and fabrication approaches for optics and photonics; how such materials contribute to novel optical behavior; and how they enable new or improved optical devices. The journal covers a full range of topics, including, but not limited to: Artificially engineered optical structures Biomaterials Optical detector materials Optical storage media Materials for integrated optics Nonlinear optical materials Laser materials Metamaterials Nanomaterials Organics and polymers Soft materials IR materials Materials for fiber optics Hybrid technologies Materials for quantum photonics Optical Materials Express considers original research articles, feature issue contributions, invited reviews, and comments on published articles. The Journal also publishes occasional short, timely opinion articles from experts and thought-leaders in the field on current or emerging topic areas that are generating significant interest.