title: Spin- and energy-dependent tunneling through a single molecule with intramolecular spatial resolution.
abstract: We investigate the spin- and energy-dependent tunneling through a single organic molecule (CoPc) adsorbed on a ferromagnetic Fe thin film, spatially resolved by low-temperature spin-polarized scanning tunneling microscopy. Interestingly, the metal ion as well as the organic ligand show a significant spin dependence of tunneling current flow. State-of-the-art ab initio calculations including also van der Waals interactions reveal a strong hybridization of molecular orbitals and substrate 3d states. The molecule is anionic due to a transfer of one electron, resulting in a nonmagnetic (S=0) state. Nevertheless, tunneling through the molecule exhibits a pronounced spin dependence due to spin-split molecule-surface hybrid states.
authors.affiliation: Institute of Applied Physics, University of Hamburg, 20355 Hamburg, Germany.
authors.forename: Jens
authors.initials: J
authors.lastname: Brede
authors.forename: Nicolae
authors.initials: N
authors.lastname: Atodiresei
authors.forename: Stefan
authors.initials: S
authors.lastname: Kuck
authors.forename: Predrag
authors.initials: P
authors.lastname: Lazić
authors.forename: Vasile
authors.initials: V
authors.lastname: Caciuc
authors.forename: Yoshitada
authors.initials: Y
authors.lastname: Morikawa
authors.forename: Germar
authors.initials: G
authors.lastname: Hoffmann
authors.forename: Stefan
authors.initials: S
authors.lastname: Blügel
authors.forename: Roland
authors.initials: R
authors.lastname: Wiesendanger