Electronic structure of graphene/Co interfaces (Articolo in rivista)

Type
Label
  • Electronic structure of graphene/Co interfaces (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.90.195446 (literal)
Alternative label
  • D. Pacilé (1,2); S. Lisi (3); I. Di Bernardo (3); M. Papagno (1,2); L. Ferrari (4); M. Pisarra (1); M. Caputo (1,5); S.K. Mahatha (6); P.M. Sheverdyaeva (2); P. Moras (2); P. Lacovig (5); S. Lizzit (5); A. Baraldi (5,7,8); M.G. Betti (3); C. Carbone (2) (2014)
    Electronic structure of graphene/Co interfaces
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • D. Pacilé (1,2); S. Lisi (3); I. Di Bernardo (3); M. Papagno (1,2); L. Ferrari (4); M. Pisarra (1); M. Caputo (1,5); S.K. Mahatha (6); P.M. Sheverdyaeva (2); P. Moras (2); P. Lacovig (5); S. Lizzit (5); A. Baraldi (5,7,8); M.G. Betti (3); C. Carbone (2) (literal)
Pagina inizio
  • 195446 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Published 26 November 2014. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.195446 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 90 (literal)
Rivista
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Dipartimento di Fisica, Università della Calabria, 87036 Arcavacata di Rende (CS), Italy (2) Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Trieste, Italy (3) Dipartimento di Fisica, Università di Roma La Sapienza, Piazzale Aldo Moro 5, I-00185 Roma, Italy (4) Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, I-00133 Roma, Italy (5) Elettra-Sincrotrone Trieste S.C.p.A., Strada Statale 14 Km 163.5, I-34149 Trieste, Italy (6) International Center for Theoretical Physics (ICTP), I-34014 Trieste, Italy (7) Dipartimento di Fisica, Università degli Studi di Trieste, Via Valerio 2, I-34127 Trieste, Italy (8) IOM-CNR, Laboratorio TASC, Strada Statale 14 Km 163.5, I-34149 Trieste, Italy (literal)
Titolo
  • Electronic structure of graphene/Co interfaces (literal)
Abstract
  • Photoemission, from core levels and valence band, and low-energy electron diffraction (LEED) have been employed to investigate the electronic and structural properties of graphene-ferromagnetic (G-FM) systems, obtained by intercalation of one monolayer (1 ML) and several layers (4 ML) of Co on G grown on Ir(111). Upon intercalation of 1 ML of Co, the Co lattice is resized to match the Ir-Ir lattice parameter, resulting in a mismatched G/Co/Ir(111) system. The intercalation of further Co layers leads to a relaxation of the Co lattice and a progressive formation of a commensurate G layer lying on top. We show the C 1s line shape and the band structure of G in the two artificial phases, mismatched and commensurate G/Co, through a comparison with the electronic structure of G grown directly on a Co thick film. Our results show that while the G valence band mainly reflects the hybridization with the d states of Co, regardless of the structural phase, the C 1s line shape is very sensitive to the rumpling of the G layer and the coordination of carbon atoms with the underlying Co. Even in the commensurate (1×1) G/Co phase, where graphene is in register with the Co film, from the angular dependence of the C 1s core level we infer the presence of more than a single component, due to inequivalent adsorption sites of carbon sublattices. (literal)
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