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Atomic-scale control of graphene magnetism by using hydrogen atoms

Science (American Association for the Advancement of Science), 2016-04, Vol.352 (6284), p.437-441 [Peer Reviewed Journal]

Copyright © 2016 American Association for the Advancement of Science ;Copyright © 2016, American Association for the Advancement of Science. ;Copyright © 2016, American Association for the Advancement of Science ;Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 0036-8075 ;EISSN: 1095-9203 ;DOI: 10.1126/science.aad8038 ;PMID: 27102478 ;CODEN: SCIEAS

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  • Title:
    Atomic-scale control of graphene magnetism by using hydrogen atoms
  • Author: González-Herrero, Héctor ; Gómez-Rodríguez, José M. ; Mallet, Pierre ; Moaied, Mohamed ; Palacios, Juan José ; Salgado, Carlos ; Ugeda, Miguel M. ; Veuillen, Jean-Yves ; Yndurain, Félix ; Brihuega, Iván
  • Subjects: Condensed Matter ; Electronics ; Hydrogen ; Magnetism ; Materials Science ; Mechanical properties ; Physics
  • Is Part Of: Science (American Association for the Advancement of Science), 2016-04, Vol.352 (6284), p.437-441
  • Description: Isolated hydrogen atoms absorbed on graphene are predicted to induce magnetic moments. Here we demonstrate that the adsorption of a single hydrogen atom on graphene induces a magnetic moment characterized by a ~20–millielectron volt spin-split state at the Fermi energy. Our scanning tunneling microscopy (STM) experiments, complemented by first-principles calculations, show that such a spin-polarized state is essentially localized on the carbon sublattice opposite to the one where the hydrogen atom is chemisorbed. This atomically modulated spin texture, which extends several nanometers away from the hydrogen atom, drives the direct coupling between the magnetic moments at unusually long distances. By using the STM tip to manipulate hydrogen atoms with atomic precision, it is possible to tailor the magnetism of selected graphene regions.
  • Publisher: United States: American Association for the Advancement of Science
  • Language: English
  • Identifier: ISSN: 0036-8075
    EISSN: 1095-9203
    DOI: 10.1126/science.aad8038
    PMID: 27102478
    CODEN: SCIEAS
  • Source: Hyper Article en Ligne (HAL) (Open Access)
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