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dc.contributor.authorPiquero Zulaica, Ignacio
dc.contributor.authorLi, Jun
dc.contributor.authorAbd El-Fattah, Zakaria M.
dc.contributor.authorSolianyk, Leonid
dc.contributor.authorGallardo Arrieta, Iker
dc.contributor.authorMonjas, Leticia
dc.contributor.authorHirsch, Anna K. H.
dc.contributor.authorArnau Pino, Andrés
dc.contributor.authorOrtega Conejero, José Enrique
dc.contributor.authorStohr, Meike
dc.contributor.authorLobo Checa, Jorge
dc.identifier.citationNanoscale 11(48) : 23132-23138 (2019)es_ES
dc.description.abstractQuantum dot arrays in the form of molecular nanoporous networks are renowned for modifying the electronic surface properties through quantum confinement. Here we show that, compared to the pristine surface state, the band bottom of the confined states can exhibit downward shifts accompanied by a lowering of the effective masses simultaneous to the appearance of tiny gaps at the Brillouin zone boundaries. We observed these effects by angle resolved photoemission for two self-assembled homothetic (scalable) Co-coordinated metal-organic networks. Complementary scanning tunneling spectroscopy measurements confirmed these findings. Electron plane wave expansion simulations and density functional theory calculations provide insight into the nature of this phenomenon, which we assign to metal-organic overlayer-substrate interactions in the form of adatom-substrate hybridization. To date, the absence of the experimental band structure resulting from single metal adatom coordinated nanoporous networks has precluded the observation of the significant surface state renormalization reported here, which we infer to be general for low interacting and well-defined adatom arrays.es_ES
dc.description.sponsorshipWe acknowledge Prof. J. Garcia de Abajo for providing the EPWE code and the financial support from the Spanish Ministry of Economy, Industry and Competitiveness (MINECO, Grant No. MAT2016-78293-C6 and FIS2016-75862-P), from the Basque Government (Grant No. IT-1255-19 and IT-756-13), from the Regional Government of Aragon (RASMIA project), from the European Regional Development Fund (ERDF) under the program Interreg V-A Espana-Francia-Andorra (Contract No. EFA 194/16 TNSI) and from the European Research Council (ERC-2012-StG 307760-SURFPRO). The CSIC Open Access Publication Support Initiative through its Unit of Information Resources for Research (URICI) is gratefully acknowledged.es_ES
dc.publisherRoyal Society of Chemistryes_ES
dc.relationinfo:eu-repo/grantAgreement/EC/FP7/ERC-2012-StG 307760-SURFPROes_ES
dc.titleSurface state tunable energy and mass renormalization from homothetic quantum dot arrayses_ES
dc.rights.holderhis article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. (CC BY-NC 3.0)es_ES
dc.rights.holderAtribución-NoComercial 3.0 España*
dc.contributor.funderEuropean Commission
dc.departamentoesFísica aplicada Ies_ES
dc.departamentoesFísica de materialeses_ES
dc.departamentoeuFisika aplikatua Ies_ES
dc.departamentoeuMaterialen fisikaes_ES

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his article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. (CC BY-NC 3.0)
Except where otherwise noted, this item's license is described as his article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. (CC BY-NC 3.0)