dc.contributor.author | Baldini, Edoardo | |
dc.contributor.author | Sentef, Michael A. | |
dc.contributor.author | Acharya, Swagata | |
dc.contributor.author | Brumme, Thomas | |
dc.contributor.author | Sheveleva, Evgeniia | |
dc.contributor.author | Lyzwa, Fryderyk | |
dc.contributor.author | Pomjakushina, Ekaterina | |
dc.contributor.author | Bernhard, Christian | |
dc.contributor.author | Van Schilfgaarde, Mark | |
dc.contributor.author | Carbone, Fabrizio | |
dc.contributor.author | Rubio Secades, Angel | |
dc.contributor.author | Weber, Cedric | |
dc.date.accessioned | 2020-04-14T20:12:56Z | |
dc.date.available | 2020-04-14T20:12:56Z | |
dc.date.issued | 2020-03-24 | |
dc.identifier.citation | Proceedings Of The National Academy Of Sciences Of The United States Of America 117(12) : 6409-6416 (2020) | es_ES |
dc.identifier.issn | 0027-8424 | |
dc.identifier.uri | http://hdl.handle.net/10810/42693 | |
dc.description.abstract | The role of the crystal lattice for the electronic properties of cuprates and other high-temperature superconductors remains controversial despite decades of theoretical and experimental efforts. While the paradigm of strong electronic correlations suggests a purely electronic mechanism behind the insulator-to-metal transition, recently the mutual enhancement of the electron-electron and the electron-phonon interaction and its relevance to the formation of the ordered phases have also been emphasized. Here, we combine polarization-resolved ultrafast optical spectroscopy and state-of-the-art dynamical mean-field theory to show the importance of the crystal lattice in the breakdown of the correlated insulating state in an archetypal undoped cuprate. We identify signatures of electron-phonon coupling to specific fully symmetric optical modes during the buildup of a three-dimensional (3D) metallic state that follows charge photodoping. Calculations for coherently displaced crystal structures along the relevant phonon coordinates indicate that the insulating state is remarkably unstable toward metallization despite the seemingly large charge-transfer energy scale. This hitherto unobserved insulator-to-metal transition mediated by fully symmetric lattice modes can find extensive application in a plethora of correlated solids. | es_ES |
dc.description.sponsorship | We are grateful to Anthony J. Leggett, Antoine Georges, Jose ' Lorenzana, and Ferdi Aryasetiawan for insightful discussions. E.B. and F.C. acknowledge support from the National Center of Competence in Research - Molecular Ultrafast Science and Technology (NCCR-MUST). M.A.S. acknowledges support by the Deutsche Forschungsgemeinschaft (DFG) through the Emmy Noether program (SE 2558/2-1). T.B. and A.R. were supported by the European Research Council (ERC-2015-AdG694097), the Cluster of Excellence (Advanced Imaging of Matter [AIM]), Grupos Consolidados (IT1249-19), and SFB925 "Light induced dynamics and control of correlated quantum systems." The Flatiron Institute is a division of the Simons Foundation. E.S., F.L., and C.B. acknowledge funding from the Swiss National Science Foundation (SNSF) by Grant 200020-172611. For computational resources, S.A., M.v.S., and C.W. were supported by the Advanced Research Computing High End Resource (ARCHER) UK National Supercomputing Service and the UK Materials and Molecular Modeling Hub (Engineering and Physical Sciences Research Council [EPSRC] Grant EP/P020194/1); T.B. was also supported by the Max Planck Computing and Data Facility (MPCDF) Garching. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | National Academy of Sciences | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/ERC-2015-AdG694097 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.subject | insulator-metal transition | es_ES |
dc.subject | cuprates | es_ES |
dc.subject | ultrafast optics | es_ES |
dc.subject | electron-phonon coupling | es_ES |
dc.subject | optical-spectra | es_ES |
dc.subject | mott insulator | es_ES |
dc.subject | temperature | es_ES |
dc.subject | superconductivity | es_ES |
dc.subject | La2-xSrxCuO4 | es_ES |
dc.subject | phase | es_ES |
dc.title | Electron-phonon-driven three-dimensional metallicity in an insulating cuprate | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND). | es_ES |
dc.rights.holder | Atribución-NoComercial-SinDerivadas 3.0 España | * |
dc.relation.publisherversion | https://www.pnas.org/content/117/12/6409.long | es_ES |
dc.identifier.doi | 10.1073/pnas.1919451117 | |
dc.contributor.funder | European Commission | |
dc.departamentoes | Física de materiales | es_ES |
dc.departamentoeu | Materialen fisika | es_ES |