Ultrasonic nodal chains in topological granular metamaterials

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dc.contributor.author Merkel, Aurélien Paul Lucien
dc.contributor.author Christensen, Johan
dc.date.accessioned 2020-12-11T12:47:59Z
dc.date.available 2020-12-11T12:47:59Z
dc.date.issued 2019-12-06
dc.identifier.bibliographicCitation Communications Physics, (2019), v. 2, 154, pp.: 1-6.
dc.identifier.issn 2399-3650
dc.identifier.uri http://hdl.handle.net/10016/31581
dc.description.abstract Three-dimensional (3D) Weyl and Dirac semimetals garner considerable attention in condensed matter physics due to the exploration of entirely new topological phases and related unconventional surface states. Nodal line and ring semimetals, on the other hand, can facilitate 3D band crossings characterized by nontrivial links such as coupled chains and knots that are protected by the underlying crystal symmetry. Experimental complexities and detrimental effects of the spin-orbit interaction, among others, pose great challenges for the advancement that can be overcome with other systems such as bosonic lattices. Here we demonstrate that a 3D mechanical metamaterial made of granular beads hosts multiple intersecting nodal rings in the ultrasonic regime. By unveiling these yet unseen classical topological phases, we discuss the resilience of the associated novel surface states that appear entirely unaffected to the type of crystal termination, making them a promising platform in ultrasonic devices for non-destructive testing and material characterization.
dc.description.sponsorship J.C. acknowledges the support from the European Research Council (ERC) through the Starting Grant No. 714577 PHONOMETA and from the MINECO through a Ramón y Cajal grant (Grant No. RYC-2015-17156).
dc.format.extent 6
dc.language.iso eng
dc.publisher Nature Research
dc.rights © The Author(s) 2019.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.other Condensed-matter physics
dc.subject.other Topological insulators
dc.title Ultrasonic nodal chains in topological granular metamaterials
dc.type article
dc.description.status Publicado
dc.subject.eciencia Física
dc.identifier.doi https://doi.org/10.1038/s42005-019-0256-z
dc.rights.accessRights openAccess
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/714577/PHONOMETA
dc.relation.projectID Gobierno de España. RYC-2015-17156
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationlastpage 6
dc.identifier.publicationtitle Communications Physics
dc.identifier.publicationvolume 2, 154
dc.identifier.uxxi AR/0000024412
dc.contributor.funder Ministerio de Economía y Competitividad (España)
dc.contributor.funder European Commission
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