In operando evidence of deoxygenation in ionic liquid gating of YBa2Cu3O7-X

dc.affiliation.dptoUC3M. Departamento de Físicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Materiales avanzados para aplicaciones en energía solares
dc.contributor.authorPerez-Muñoz, Ana M.
dc.contributor.authorSchio, Pedro
dc.contributor.authorPoloni, Roberta
dc.contributor.authorFernández Martínez, Alejandro
dc.contributor.authorRivera-Calzada, Alberto
dc.contributor.authorCezar, Julio C.
dc.contributor.authorSalas Colera, Eduardo
dc.contributor.authorCastro, German R.
dc.contributor.authorKinney, Joseph
dc.contributor.authorLeón, Carlos
dc.contributor.authorSantamaria, Jacobo
dc.contributor.authorGarcia-Barriocanal, Javier
dc.contributor.authorGoldman, Allen M.
dc.contributor.funderComunidad de Madrides
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.description.abstractThese results underscore the debate on the true nature, electrostatic vs. electrochemical, of the doping of cuprates with ionic liquids. Here, we address the doping mechanism of the high-temperature superconductor YBa2Cu3O7-X (YBCO) by simultaneous ionic liquid gating and X-ray absorption experiments. Pronounced spectral changes are observed at the Cu K-edge concomitant with the superconductor-to-insulator transition, evidencing modification of the Cu coordination resulting from the deoxygenation of the CuO chains, as confirmed by first-principles density functional theory (DFT) simulations. Beyond providing evidence of the importance of chemical doping in electric double-layer (EDL) gating experiments with superconducting cuprates, our work shows that interfacing correlated oxides with ionic liquids enables a delicate control of oxygen content, paving the way to novel electrochemical concepts in future oxide electronics.en
dc.description.sponsorshipR.P. acknowledges D. Prendergast for discussions. The authors acknowledge the Spanish Collaborating Research Group Beamline (SpLine) staff for their valuable help. A.M.G. was supported partially by US National Science Foundation Award DMR-1420013 through the Minnesota Materials Research Science and Engineering Center and by US National Science Foundation Award DMR-1209578. J.G.-B. acknowledges support from the Ministerio de Economía, Industria y Competitividad (MINECO) through the Ramon y Cajal Program and through MINECO Award PCIN-2013-061. Calculations were performed using computer resources from Genci Grand Équipement National de Calcul Intensif under Centre Informatique National de l'Enseignement Suprieur Grants c2015097211 and c2016097211. Work at Universidad Complutense de Madrid was supported by the Spanish MINECO through Grants MAT2014-52405-C02-01 and Consolider Ingenio 2010-CSD2009-00013 (Imagine) and by Comunidad Autonoma de Madrid (CAM) through Grant CAM S2013/MIT-2740. The SpLine beamline is supported financially by the Spanish MINECO and Consejo Superior de Investigaciones Cientificas under Grant PIE 2010 6 OE 013. P.S. acknowledges the support from Fundação de Amparo à Pesquisa do Estado de São Paulo Projects 2012/18397-2 and 2013/12537-9.en
dc.identifier.bibliographicCitationPerez-Muñoz, A. M., Schio, P., Poloni, R., Fernandez-Martinez, A., Rivera-Calzada, A., Cezar, J. C., Salas-Colera, E., Castro, G. R., Kinney, J., Leon, C., Santamaria, J., Garcia-Barriocanal, J. & Goldman, A. M. (2016). In operando evidence of deoxygenation in ionic liquid gating of YBa2Cu3O7-X. Proceedings of the National Academy of Sciences, 114(2), 215-220.en
dc.identifier.publicationtitleProceedings of the National Academy of Sciencesen
dc.publisherNational Academy of Sciencesen
dc.relation.projectIDGobierno de España. PCIN-2013-061es
dc.relation.projectIDGobierno de España. MAT2014-52405-C02-01es
dc.relation.projectIDComunidad de Madrid. S2013/MIT-2740es
dc.rights© The Authors, 2016.en
dc.rights.accessRightsopen accessen
dc.subject.ecienciaEnergías Renovableses
dc.subject.otherElectric double-layer techniquesen
dc.subject.otherFirst-principles density functional theoryen
dc.subject.otherHigh-temperature superconductivityen
dc.subject.otherNear-edge X-Ray absorption spectroscopiesen
dc.subject.otherSuperconductor-insulator transitionen
dc.titleIn operando evidence of deoxygenation in ionic liquid gating of YBa2Cu3O7-Xen
dc.typeresearch article*
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