title: Tuning the Magnetic Anisotropy at a Molecule-Metal Interface.
abstract: We demonstrate that a C(60) overlayer enhances the perpendicular magnetic anisotropy of a Co thin film, inducing an inverse spin reorientation transition from in plane to out of plane. The driving force is the (60)/Co interfacial magnetic anisotropy that we have measured quantitatively in situ as a function of the (60) coverage. Comparison with state-of-the-art ab initio calculations show that this interfacial anisotropy mainly arises from the local hybridization between (60) p(z) and Co d(z(2)) orbitals. By generalizing these arguments, we also demonstrate that the hybridization of (60) with a Fe(110) surface decreases the perpendicular magnetic anisotropy. These results open the way to tailor the interfacial magnetic anisotropy in organic-material-ferromagnet systems.
authors.affiliation: Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot-Paris 7, UMR CNRS 7162, 10 rue Alice Domon et Léonie Duquet 75205 Paris Cedex 13, France.
authors.forename: K
authors.initials: K
authors.lastname: Bairagi
authors.affiliation: Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot-Paris 7, UMR CNRS 7162, 10 rue Alice Domon et Léonie Duquet 75205 Paris Cedex 13, France.
authors.forename: A
authors.initials: A
authors.lastname: Bellec
authors.affiliation: Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot-Paris 7, UMR CNRS 7162, 10 rue Alice Domon et Léonie Duquet 75205 Paris Cedex 13, France.
authors.forename: V
authors.initials: V
authors.lastname: Repain
authors.affiliation: Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot-Paris 7, UMR CNRS 7162, 10 rue Alice Domon et Léonie Duquet 75205 Paris Cedex 13, France.
authors.forename: C
authors.initials: C
authors.lastname: Chacon
authors.affiliation: Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot-Paris 7, UMR CNRS 7162, 10 rue Alice Domon et Léonie Duquet 75205 Paris Cedex 13, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Girard
authors.affiliation: Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot-Paris 7, UMR CNRS 7162, 10 rue Alice Domon et Léonie Duquet 75205 Paris Cedex 13, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Garreau
authors.affiliation: Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot-Paris 7, UMR CNRS 7162, 10 rue Alice Domon et Léonie Duquet 75205 Paris Cedex 13, France.
authors.forename: J
authors.initials: J
authors.lastname: Lagoute
authors.affiliation: Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot-Paris 7, UMR CNRS 7162, 10 rue Alice Domon et Léonie Duquet 75205 Paris Cedex 13, France.
authors.forename: S
authors.initials: S
authors.lastname: Rousset
authors.affiliation: Center for Condensed Matter Sciences, National Taiwan University, Taipei 106 Taiwan, Republic of China.
authors.forename: R
authors.initials: R
authors.lastname: Breitwieser
authors.affiliation: Center for Condensed Matter Sciences, National Taiwan University, Taipei 106 Taiwan, Republic of China.
authors.forename: Yu-Cheng
authors.initials: YC
authors.lastname: Hu
authors.affiliation: Center for Condensed Matter Sciences, National Taiwan University, Taipei 106 Taiwan, Republic of China.
authors.forename: Yen Cheng
authors.initials: YC
authors.lastname: Chao
authors.affiliation: Center for Condensed Matter Sciences, National Taiwan University, Taipei 106 Taiwan, Republic of China.|Department of physics, National Taiwan University, Taipei 106, Taiwan, Republic of China.
authors.forename: Woei Wu
authors.initials: WW
authors.lastname: Pai
authors.affiliation: Service de Physique de l'Etat Condensé (CNRS UMR 3680), IRAMIS/SPEC, CEA Saclay, F-91191 Gif-sur-Yvette Cedex, France.
authors.forename: D
authors.initials: D
authors.lastname: Li
authors.affiliation: Service de Physique de l'Etat Condensé (CNRS UMR 3680), IRAMIS/SPEC, CEA Saclay, F-91191 Gif-sur-Yvette Cedex, France.
authors.forename: A
authors.initials: A
authors.lastname: Smogunov
authors.affiliation: Service de Physique de l'Etat Condensé (CNRS UMR 3680), IRAMIS/SPEC, CEA Saclay, F-91191 Gif-sur-Yvette Cedex, France.|DTU NANOTECH, Technical University of Denmark, Ørsteds Plads 344, DK-2800 Kgs. Lyngby, Denmark.
authors.forename: C
authors.initials: C
authors.lastname: Barreteau