Momentum space toroidal moment in a photonic metamaterial

Biao Yang; Yangang Bi; Rui-Xing Zhang; Ruo-Yang Zhang; Oubo You; Zhihong Zhu; Jing Feng; Hongbo Sun; C. T. Chan; Chao-Xing Liu; Shuang Zhang

doi:10.1038/s41467-021-22063-w

Nature Communications (Mar 2021)

Momentum space toroidal moment in a photonic metamaterial

Biao Yang,
Yangang Bi,
Rui-Xing Zhang,
Ruo-Yang Zhang,
Oubo You,
Zhihong Zhu,
Jing Feng,
Hongbo Sun,
C. T. Chan,
Chao-Xing Liu,
Shuang Zhang

Affiliations

Biao Yang: College of Advanced Interdisciplinary Studies & Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, National University of Defense Technology
Yangang Bi: School of Physics and Astronomy, University of Birmingham
Rui-Xing Zhang: Condensed Matter Theory Center and Joint Quantum Institute, Department of Physics, University of Maryland
Ruo-Yang Zhang: Department of Physics, The Hong Kong University of Science and Technology
Oubo You: School of Physics and Astronomy, University of Birmingham
Zhihong Zhu: College of Advanced Interdisciplinary Studies & Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, National University of Defense Technology
Jing Feng: State Key Lab of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University
Hongbo Sun: State Key Lab of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University
C. T. Chan: Department of Physics, The Hong Kong University of Science and Technology
Chao-Xing Liu: Department of Physics, The Pennsylvania State University
Shuang Zhang: School of Physics and Astronomy, University of Birmingham

DOI: https://doi.org/10.1038/s41467-021-22063-w
Journal volume & issue: Vol. 12, no. 1
pp. 1 – 8

Abstract

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The appearance of toroidal multipolar moments in electrodynamics interrogates the question for their existence in Berry curvature, which can be seen as the “magnetic field” in the momentum space. Here, the authors observe 3D vortex distributions in the Berry curvature within a photonic metamaterial.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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