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dc.contributor.authorPeng, Bo
dc.contributor.authorBouhon, Adrien
dc.contributor.authorMonserrat Sanchez, Bartomeu
dc.contributor.authorSlager, Robert-Jan
dc.date.accessioned2022-01-07T00:30:48Z
dc.date.available2022-01-07T00:30:48Z
dc.identifier.issn2041-1723
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/332249
dc.description.abstractTopological phases of matter have revolutionised the fundamental understanding of band theory and hold great promise for next-generation technologies such as low-power electronics or quantum computers. Single-gap topologies have been extensively explored, and a large number of materials have been theoretically proposed and experimentally observed. These ideas have recently been extended to multi-gap topologies with band nodes that carry non-Abelian charges, characterised by invariants that arise by the momentum space braiding of such nodes. However, the constraints placed by the Fermi-Dirac distribution to electronic systems have so far prevented the experimental observation of multi-gap topologies in real materials. Here, we show that multi-gap topologies and the accompanying phase transitions driven by braiding processes can be readily observed in the bosonic phonon spectra of known monolayer silicates. The associated braiding process can be controlled by means of an electric field and epitaxial strain, and involves, for the first time, more than three bands. Finally, we propose that the band inversion processes at the $\Gamma$ point can be tracked by following the evolution of the Raman spectrum, providing a clear signature for the experimental verification of the band inversion accompanied by the braiding process.
dc.publisherNature Research
dc.rightsCreative Commons CC BY 4.0
dc.rights.urihttp://www.rioxx.net/licenses/CC BY 4.0
dc.subjectcond-mat.mes-hall
dc.subjectcond-mat.mes-hall
dc.subjectcond-mat.mtrl-sci
dc.subjectphysics.comp-ph
dc.titlePhonons as a platform for non-Abelian braiding and its manifestation in layered silicates
dc.typeArticle
dc.publisher.departmentDepartment of Materials Science And Metallurgy
dc.publisher.departmentDepartment of Physics
dc.date.updated2022-01-05T15:47:34Z
prism.publicationNameNature Communications
dc.identifier.doi10.17863/CAM.79694
dcterms.dateAccepted2022-01-05
rioxxterms.versionVoR
dc.contributor.orcidMonserrat Sanchez, Bartomeu [0000-0002-4233-4071]
dc.contributor.orcidSlager, Robert-Jan [0000-0001-9055-5218]
rioxxterms.typeJournal Article/Review
cam.orpheus.success2022-05-18
cam.orpheus.counter6*
cam.depositDate2022-01-05
pubs.licence-identifierapollo-deposit-licence-2-1
pubs.licence-display-nameApollo Repository Deposit Licence Agreement


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