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

Brede, Jens; Atodiresei, Nicolae; Kuck, Stefan; Lazić, Predrag; Caciuc, Vasile; Morikawa, Yoshitada; Hoffmann, Germar; Blügel, Stefan; Wiesendanger, Roland (2010) Spin- and Energy-Dependent Tunneling through a single Molecule with Intramolecular Spatial Resolution. Physical Review Letters, 105 (4). 047204-1. ISSN 0031-9007

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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.

Item Type: Article
Uncontrolled Keywords: tunneling; single molecule; STM; ab initio calculations
Subjects: NATURAL SCIENCES > Physics
Divisions: Theoretical Physics Division
Project titleProject leaderProject codeProject type
Površine i nanostrukture: Teorijski pristupi i numerički proračuni[5180] Brako, Radovan098-0352828-2863MZOS
Depositing User: Predrag Lazić
Date Deposited: 01 Feb 2013 16:38
DOI: 10.1103/PhysRevLett.105.047204

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