Atomic species identification at the (101) anatase surface by simultaneous scanning tunnelling and atomic force microscopy

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Show simple item record Stetsovych, Oleksandr Todorović, Milica Shimizu, Tomoko K. Moreno, César H. Ryan, James William Pérez León, Carmen Sagisaka, Keisuke Palomares, Emilio J. Matolín, Vladimír Fujita, Daisuke Pérez, Rubén Custance, Óscar 2017-02-14T16:03:39Z 2017-02-14T16:03:39Z 2015-06-29
dc.identifier.citation Nature Communications 6 (2015): 7265 en_US
dc.identifier.issn 2041-1723 (online) es_ES
dc.description.abstract Anatase is a pivotal material in devices for energy-harvesting applications and catalysis. Methods for the accurate characterization of this reducible oxide at the atomic scale are critical in the exploration of outstanding properties for technological developments. Here we combine atomic force microscopy (AFM) and scanning tunnelling microscopy (STM), supported by first-principles calculations, for the simultaneous imaging and unambiguous identification of atomic species at the (101) anatase surface. We demonstrate that dynamic AFM-STM operation allows atomic resolution imaging within the materiala € s band gap. Based on key distinguishing features extracted from calculations and experiments, we identify candidates for the most common surface defects. Our results pave the way for the understanding of surface processes, like adsorption of metal dopants and photoactive molecules, that are fundamental for the catalytic and photovoltaic applications of anatase, and demonstrate the potential of dynamic AFM-STM for the characterization of wide band gap materials en_US
dc.description.sponsorship Work supported by the NIMS (AA002 and AF006 projects), by the MEXT KAKENHI Grant Number 26104540, by the Charles University (GAUK 339311) and by the Spanish MINECO (projects PLE2009-0061, MAT2011- 023627 and CSD2010-00024). Computer time was provided by the Spanish Supercomputing Network (RES, Spain) at the MareNostrum III Supercomputer (BCS, Barcelona), and by the PRACE initiative (project RA0986) at the Curie Supercomputer (CEA, France). O.S and V.M. thank the Charles University-NIMS International Cooperative Graduate School Program. J.W.R. thanks NIMS for funding through the NIMS Internship Program and ICIQ for his ICIQ Fellowship en_US
dc.format.extent 9 pag. es_ES
dc.format.mimetype application/pdf en
dc.language.iso eng en
dc.publisher Nature Publishing Group en_US
dc.relation.ispartof Nature Communications en_US
dc.rights © 2015 Macmillan Publishers Limited en_US
dc.subject.other Atomic force microscopy en_US
dc.subject.other Scanning tunneling microscopy en_US
dc.subject.other Surface property en_US
dc.subject.other Photoactivation en_US
dc.title Atomic species identification at the (101) anatase surface by simultaneous scanning tunnelling and atomic force microscopy en_US
dc.type article en
dc.subject.eciencia Física es_ES
dc.relation.publisherversion es_ES
dc.identifier.doi 10.1038/ncomms8265 es_ES
dc.identifier.publicationfirstpage 7265 es_ES
dc.identifier.publicationlastpage 7265 es_ES
dc.identifier.publicationvolume 6 es_ES
dc.relation.projectID Gobierno de España. PLE2009-0061 es_ES
dc.relation.projectID Gobierno de España. CSD2010-00024 es_ES
dc.relation.projectID Gobierno de España. MAT2011-023627 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion en
dc.rights.accessRights openAccess en
dc.authorUAM Todorovic , Milica (264551)

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