Anharmonic strong-coupling effects at the origin of the charge density wave in CsV3Sb5
dc.bibliographicCitation.articleNumber | 1895 | |
dc.bibliographicCitation.firstPage | 1895 | |
dc.bibliographicCitation.issue | 1 | |
dc.bibliographicCitation.journalTitle | Nature Communications | eng |
dc.bibliographicCitation.volume | 15 | |
dc.contributor.author | He, Ge | |
dc.contributor.author | Peis, Leander | |
dc.contributor.author | Cuddy, Emma Frances | |
dc.contributor.author | Zhao, Zhen | |
dc.contributor.author | Li, Dong | |
dc.contributor.author | Zhang, Yuhang | |
dc.contributor.author | Stumberger, Romona | |
dc.contributor.author | Moritz, Brian | |
dc.contributor.author | Yang, Haitao | |
dc.contributor.author | Gao, Hongjun | |
dc.contributor.author | Devereaux, Thomas Peter | |
dc.contributor.author | Hackl, Rudi | |
dc.date.accessioned | 2024-05-07T11:16:55Z | |
dc.date.available | 2024-05-07T11:16:55Z | |
dc.date.issued | 2024 | |
dc.description.abstract | The formation of charge density waves is a long-standing open problem, particularly in dimensions higher than one. Various observations in the vanadium antimonides discovered recently further underpin this notion. Here, we study the Kagome metal CsV3Sb5 using polarized inelastic light scattering and density functional theory calculations. We observe a significant gap anisotropy with 2Δmax/kBTCDW≈20, far beyond the prediction of mean-field theory. The analysis of the A1g and E2g phonons, including those emerging below TCDW, indicates strong phonon-phonon coupling, presumably mediated by a strong electron-phonon interaction. Similarly, the asymmetric Fano-type lineshape of the A1g amplitude mode suggests strong electron-phonon coupling below TCDW. The large electronic gap, the enhanced anharmonic phonon-phonon coupling, and the Fano shape of the amplitude mode combined are more supportive of a strong-coupling phonon-driven charge density wave transition than of a Fermi surface instability or an exotic mechanism in CsV3Sb5. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/14581 | |
dc.identifier.uri | https://doi.org/10.34657/13612 | |
dc.language.iso | eng | |
dc.publisher | [London] : Nature Publishing Group UK | |
dc.relation.doi | https://doi.org/10.1038/s41467-024-45865-0 | |
dc.relation.essn | 2041-1723 | |
dc.rights.license | CC BY 4.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0 | |
dc.subject.ddc | 500 | |
dc.subject.other | metal | eng |
dc.subject.other | unclassified drug | eng |
dc.subject.other | vanadium antimony | eng |
dc.subject.other | vanadium | eng |
dc.subject.other | electron microscopy | eng |
dc.subject.other | light scattering | eng |
dc.subject.other | metal | eng |
dc.subject.other | probability density function | eng |
dc.subject.other | vanadium | eng |
dc.subject.other | anisotropy | eng |
dc.subject.other | Article | eng |
dc.subject.other | calculation | eng |
dc.subject.other | charge density | eng |
dc.subject.other | chemical reaction | eng |
dc.subject.other | crystal structure | eng |
dc.subject.other | density functional theory | eng |
dc.subject.other | hysteresis | eng |
dc.subject.other | light scattering | eng |
dc.subject.other | low temperature | eng |
dc.subject.other | phonon | eng |
dc.subject.other | polarization | eng |
dc.subject.other | Raman spectrometry | eng |
dc.subject.other | strong electron phonon coupling | eng |
dc.subject.other | temperature dependence | eng |
dc.subject.other | adult | eng |
dc.subject.other | article | eng |
dc.subject.other | controlled study | eng |
dc.subject.other | electron | eng |
dc.subject.other | light scattering | eng |
dc.subject.other | prediction | eng |
dc.title | Anharmonic strong-coupling effects at the origin of the charge density wave in CsV3Sb5 | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | |
wgl.contributor | IFWD | |
wgl.subject | Physik | ger |
wgl.type | Zeitschriftenartikel | ger |
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