Spin- and Energy-Dependent Tunneling through a Single Molecule with Intramolecular Spatial Resolution

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...

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Bibliographic Details
Published in:	Physical review letters Vol. 105; no. 4; p. 047204
Main Authors:	Brede, Jens, Atodiresei, Nicolae, Kuck, Stefan, Lazić, Predrag, Caciuc, Vasile, Morikawa, Yoshitada, Hoffmann, Germar, Blügel, Stefan, Wiesendanger, Roland
Format:	Journal Article
Language:	English
Published:	United States 23.07.2010
ISSN:	0031-9007, 1079-7114, 1079-7114
Online Access:	Get full text
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Summary:	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.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0031-9007 1079-7114 1079-7114
DOI:	10.1103/PhysRevLett.105.047204