Journal
PHYSICAL REVIEW LETTERS
Volume 114, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.247203
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Funding
- HEFOR project of the Labex SEAM
- National Synchrotron Radiation Research Center of Taiwan
- European Research Council under the European Union [259297]
- GENCI-[TGCC/IDRIS] [2014096813, 2015097416]
- [ANR-BLANC-12 BS10 006]
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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 C-60/Co interfacial magnetic anisotropy that we have measured quantitatively in situ as a function of the C-60 coverage. Comparison with state-of-the-art ab initio calculations show that this interfacial anisotropy mainly arises from the local hybridization between C-60 p(z) and Co d(z)(2) orbitals. By generalizing these arguments, we also demonstrate that the hybridization of C-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.
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