title: Large magnetoresistance through a single molecule due to a spin-split hybridized orbital.
abstract: Using organic materials in spintronic devices raises a lot of expectation for future applications due to their flexibility, low cost, long spin lifetime, and easy functionalization. However, the interfacial hybridization and spin polarization between the organic layer and the ferromagnetic electrodes still has to be understood at the molecular scale. Coupling state-of-the-art spin-polarized scanning tunneling spectroscopy and spin-resolved ab initio calculations, we give the first experimental evidence of the spin splitting of a molecular orbital on a single non magnetic C(60) molecule in contact with a magnetic material, namely, the Cr(001) surface. This hybridized molecular state is responsible for an inversion of sign of the tunneling magnetoresistance depending on energy. This result opens the way to spin filtering through molecular orbitals.
authors: Laboratoire Matériaux et Phénomènes Quantiques, UMR7162, Université Paris Diderot, Paris 7, Sorbonne Paris Cité, CNRS, UMR 7162 case courrier 7021, 75205 Paris 13, France.
authors: S L
authors: SL
authors: Kawahara
authors: J
authors: J
authors: Lagoute
authors: V
authors: V
authors: Repain
authors: C
authors: C
authors: Chacon
authors: Y
authors: Y
authors: Girard
authors: S
authors: S
authors: Rousset
authors: A
authors: A
authors: Smogunov
authors: C
authors: C
authors: Barreteau
mesh_terms: D003198:Computer Simulation; D017097:Electric Impedance; D037741:Fullerenes / Q000737:chemistry*; D060526:Magnetic Fields; D008956:Models, Chemical; D008958:Models, Molecular
chemical_list: D037741:Fullerenes