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

Autori
Brede, Jens ; Atodiresei, Nicolae ; Kuck, Stefan ; Lazić, Predrag ; Caciuc, Vasile ; Morikawa, Yoshitada ; Hoffmann, Germar ; Blügel, Stefan ; Wiesendanger, Roland

Izvornik
Physical Review Letters (0031-9007) 105 (2010), 4; 047204-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, pismo, znanstveni

Ključne riječi
tunneling; single molecule; STM; ab initio calculations

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA