Point defects on graphene on metals
Entity
UAM. Departamento de Física de la Materia CondensadaPublisher
American Physical SocietyDate
2011-09-08Citation
10.1103/PhysRevLett.107.116803
Physical Review Letters 107.11 (2011): 116803
ISSN
0031-9007 (print); 1079-7114 (online)DOI
10.1103/PhysRevLett.107.116803Funded by
This work is supported by MAT2008-02929-NAN, MAT2010-14902, MAT2008-02939-E, CSD2010-00024 (MICINN, Spain), by PERG05-GA-2009-24209 (EU) and S2009/MAT-1467 (Comunidad de Madrid, Spain). I.B and P. P. were supported by the Ramón y Cajal program. Computer time provided by the Spanish Supercomputing Network (RES), and by the Centro de Supercomputación y Visualización de Madrid (CeSViMa)Project
Gobierno de España. MAT2010-14902; Gobierno de España. MAT2008-02939-E; Gobierno de España. MAT2008-02929-NAN; Gobierno de España. CSD2010-00024; Comunidad de Madrid. S2009/MAT-1467/NANOOBJETOSEditor's Version
http://dx.doi.org/10.1103/PhysRevLett.107.116803Subjects
FísicaRights
© 2011 American Physical SocietyAbstract
Understanding the coupling of graphene with its local environment is critical to be able to integrate it in tomorrow’s electronic devices. Here we show how the presence of a metallic substrate affects the properties of an atomically tailored graphene layer. We have deliberately introduced single carbon vacancies on a graphene monolayer grown on a Pt(111) surface and investigated its impact in the electronic, structural, and magnetic properties of the graphene layer. Our low temperature scanning tunneling microscopy studies, complemented by density functional theory, show the existence of a broad electronic resonance above the Fermi energy associated with the vacancies. Vacancy sites become reactive leading to an increase of the coupling between the graphene layer and the metal substrate at these points; this gives rise to a rapid decay of the localized state and the quenching of the magnetic moment associated with carbon vacancies in freestanding graphene layers
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Google Scholar:Ugeda, M. M.
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Fernández-Torre, D.
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Brihuega Álvarez, Iván
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Pou Bell, Pablo
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Martínez-Galera, A. J.
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Pérez Pérez, Rubén
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Gómez Rodríguez, José María
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