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

Preview

PDF - Published Version Download (1MB) | Preview

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.

Item Type:	Article
Uncontrolled Keywords:	tunneling; single molecule; STM; ab initio calculations
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Theoretical Physics Division
Projects:	Project title Project leader Project code Project type Površine i nanostrukture: Teorijski pristupi i numerički proračuni [5180] Brako, Radovan 098-0352828-2863 MZOS
Depositing User:	Predrag Lazić
Date Deposited:	01 Feb 2013 16:38
URI:	http://fulir.irb.hr/id/eprint/495
DOI:	10.1103/PhysRevLett.105.047204

Actions (login required)

View Item