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Article: Momentum space toroidal moment in a photonic metamaterial

TitleMomentum space toroidal moment in a photonic metamaterial
Authors
Issue Date2021
PublisherNature Research: Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html
Citation
Nature Communications, 2021, v. 12 n. 1, p. article no. 1784 How to Cite?
AbstractBerry curvature, the counterpart of the magnetic field in the momentum space, plays a vital role in the transport of electrons in condensed matter physics. It also lays the foundation for the emerging field of topological physics. In the three-dimensional systems, much attention has been paid to Weyl points, which serve as sources and drains of Berry curvature. Here, we demonstrate a toroidal moment of Berry curvature with flux approaching to π in judiciously engineered metamaterials. The Berry curvature exhibits a vortex-like configuration without any source and drain in the momentum space. Experimentally, the presence of Berry curvature toroid is confirmed by the observation of conical-frustum shaped domain-wall states at the interfaces formed by two metamaterials with opposite toroidal moments.
Persistent Identifierhttp://hdl.handle.net/10722/299114
ISSN
2020 Impact Factor: 14.919
2015 SCImago Journal Rankings: 6.539
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYang, B-
dc.contributor.authorBi, Y-
dc.contributor.authorZhang, RX-
dc.contributor.authorZhang, RY-
dc.contributor.authorYou, O-
dc.contributor.authorZhu, Z-
dc.contributor.authorFeng, J-
dc.contributor.authorSun, H-
dc.contributor.authorChan, CT-
dc.contributor.authorLiu, CX-
dc.contributor.authorZhang, S-
dc.date.accessioned2021-04-28T02:26:22Z-
dc.date.available2021-04-28T02:26:22Z-
dc.date.issued2021-
dc.identifier.citationNature Communications, 2021, v. 12 n. 1, p. article no. 1784-
dc.identifier.issn2041-1723-
dc.identifier.urihttp://hdl.handle.net/10722/299114-
dc.description.abstractBerry curvature, the counterpart of the magnetic field in the momentum space, plays a vital role in the transport of electrons in condensed matter physics. It also lays the foundation for the emerging field of topological physics. In the three-dimensional systems, much attention has been paid to Weyl points, which serve as sources and drains of Berry curvature. Here, we demonstrate a toroidal moment of Berry curvature with flux approaching to π in judiciously engineered metamaterials. The Berry curvature exhibits a vortex-like configuration without any source and drain in the momentum space. Experimentally, the presence of Berry curvature toroid is confirmed by the observation of conical-frustum shaped domain-wall states at the interfaces formed by two metamaterials with opposite toroidal moments.-
dc.languageeng-
dc.publisherNature Research: Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html-
dc.relation.ispartofNature Communications-
dc.rightsNature Communications. Copyright © Nature Research: Fully open access journals.-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleMomentum space toroidal moment in a photonic metamaterial-
dc.typeArticle-
dc.identifier.emailZhang, S: shuzhang@hku.hk-
dc.identifier.authorityZhang, S=rp02759-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1038/s41467-021-22063-w-
dc.identifier.pmid33741969-
dc.identifier.pmcidPMC7979886-
dc.identifier.scopuseid_2-s2.0-85102689052-
dc.identifier.hkuros322254-
dc.identifier.volume12-
dc.identifier.issue1-
dc.identifier.spagearticle no. 1784-
dc.identifier.epagearticle no. 1784-
dc.identifier.isiWOS:000631934100016-
dc.publisher.placeUnited Kingdom-

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