Multiband topological states from band fold of photonic crystals

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-09-15 DOI:10.1117/1.jnp.17.036014

Fan Bu, Yun-Tuan Fang

引用次数: 0

Abstract

To find more simple and universal method to realize the topological photonic crystals (PCs), we use the fold effect of bands of PCs and the Su–Schrieffer–Heeger model. Through the change of structure parameters, a lattice can undergo the transformation from topologically trivial to nontrivial states. The fold effect of bands leads to the multiple topological edge bands, which increase the band width of topological states. Furthermore, the topological corner states can be formed in the designed structure.

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光子晶体带折叠的多带拓扑态

为了寻找更简单和通用的方法来实现拓扑光子晶体(PCs)，我们利用了PCs波段的折叠效应和Su-Schrieffer-Heeger模型。通过改变结构参数，晶格可以从拓扑平凡状态转变为非平凡状态。带的折叠效应导致了多个拓扑边缘带，从而增加了拓扑态的带宽。此外，所设计的结构可以形成拓扑角态。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.