title: Hybrid states and charge transfer at a phthalocyanine heterojunction: MnPc(δ+)/F16CoPc(δ-).
abstract: Using photoelectron spectroscopy we demonstrate charge transfer at an interface between two well-known transition metal phthalocyanines, MnPc and F16CoPc, resulting in charged MnPc(δ+) and F16CoPc(δ-) species. Moreover, the transferred charge is substantially confined to the two transition metal centers. Density functional theory calculations reveal that a hybrid state is formed between the two types of phthalocyanines, which causes this charge transfer. For the hybrid state the Mn 3d(xz) interacts with the Co 3d(z2) orbital leading to a two-level system. As only the lower of the two hybrid states is occupied, the charge is directly transferred to the Co 3d(z2) orbital.
authors.affiliation: IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany.
authors.forename: Susi
authors.initials: S
authors.lastname: Lindner
authors.forename: Martin
authors.initials: M
authors.lastname: Knupfer
authors.forename: Rico
authors.initials: R
authors.lastname: Friedrich
authors.forename: Torsten
authors.initials: T
authors.lastname: Hahn
authors.forename: Jens
authors.initials: J
authors.lastname: Kortus