Breakdown effect of periodic perturbations to the robustness of topological phase in a gyromagnetic photonic crystal

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成果类型：

期刊论文

作者：

Tian, Y.;Zhou, Rui;Liu, Zheng-Rong;Liu, Y.;Lin, Hai;...

通讯作者：

Liu, Y;Lin, H

作者机构：

[Zhou, Bin; Tian, Y.; Liu, Y.; Liu, Zheng-Rong] Hubei Univ, Sch Phys, Wuhan, Hubei, Peoples R China.

[Tian, Y.; Liu, Y.] Hubei Univ, Sch Microelect, Wuhan, Hubei, Peoples R China.

[Zhou, Rui; Lin, Hai; Lin, H] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan, Hubei, Peoples R China.

[Liu, Y.] Lanzhou Univ, Lanzhou Ctr Theoret Phys, Key Lab Theoret Phys Gansu Prov, Lanzhou, Peoples R China.

[Liu, Y.] Lanzhou Univ, Key Lab Quantum Theory & Applicat MoE, Lanzhou, Peoples R China.

通讯机构：

[Lin, H ] C

[Liu, Y ] H

Hubei Univ, Sch Phys, Wuhan, Hubei, Peoples R China.

Hubei Univ, Sch Microelect, Wuhan, Hubei, Peoples R China.

Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan, Hubei, Peoples R China.

语种：

英文

关键词：

photonic crystals;topological insulators

期刊：

IET Optoelectronics

ISSN：

1751-8768

年：

2023

卷：

期：

页码：

249-256

DOI：

10.1049/ote2.12106

基金类别：

Y. T. and Y. L. thank Xu Dong-Hui, Wang Haixiao, Chen Zhaoxian, Chen Huan and Chen Rui for helpful discussion, and are supported by Young Scientist Fund [NSFC11804087], National Natural Science Foundation [NSFC12247101]; Science and Technology Department o [NSFC11804087]; National Natural Science Foundation [NSFC12074107]; Science and Technology Department of Hubei Province [2022CFB553]; Hubei University [X202210512039]; Educational Commission of Hubei Province of China [Q20211008]; Fundamental Research Funds for the Central University of China [CCNU19TS073]; National Natural Science Foundation of China [2022CFA012]; Educational Commission of Hubei Province [T2020001]

机构署名：

本校为通讯机构

院系归属：

物理科学与技术学院

摘要：

In our paper, the authors take the simple case of periodic randomisation by disrupting two parameters in unit cells. The authors characterise the topological breakdown via directly calculating variances to Chern numbers under their defined perturbation. Their calculation demonstrates that such a periodic perturbation easily annihilates topological invariants, providing benchmark for future design of these topological devices. Abstract In the known field of topological photonics, what remains less so is the breakdown effect of topological phases...

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Breakdown effect of periodic perturbations to the robustness of topological phase in a gyromagnetic photonic crystal

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