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

被引：241

作者：

Brede, Jens ^{[1
]}

Atodiresei, Nicolae ^{[2
,3
,4
]}

Kuck, Stefan ^{[1
,2
]}

Lazic, Predrag ^{[2
,3
,5
]}

Caciuc, Vasile ^{[3
]}

Morikawa, Yoshitada ^{[4
]}

Hoffmann, Germar ^{[1
]}

Bluegel, Stefan ^{[2
,3
]}

Wiesendanger, Roland ^{[1
]}

机构：

[1] Univ Hamburg, Inst Appl Phys, D-20355 Hamburg, Germany

[2] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany

[3] Forschungszentrum Julich, Inst Adv Simulat, D-52425 Julich, Germany

[4] Osaka Univ, Inst Sci & Ind Res, Osaka, Japan

[5] Rudjer Boskovic Inst, Zagreb, Croatia

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 04期

关键词：

POLARIZATION;

D O I：

10.1103/PhysRevLett.105.047204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

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页数：4

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