Spin-Dependent Molecule Symmetry at a Pentacene-Co Spinterface.

Chu, Yu-Hsun; Hsu, Chuang-Han; Lu, Chun-I; Yang, Hung-Hsiang; Yang, Tsung-Han; Luo, Chi-Hung; Yang, Kai-Jheng; Hsu, Shih-Hao et al. · ACS Nano · 2015

basic_science · Level V

Where this comes from

Abstract

Incorporating spin-polarized scanning tunneling microscopy (SP-STM) measurements and first-principles calculations, we resolve spin-polarized states and consequent features in a pentacene(PEN)-Co hybrid system. Symmetry reduction of PEN clarifies the PEN adsorption site and the Co stacking methods. Near the Fermi energy, the molecular symmetry is spin-dependently recovered and an inversion of spin-polarization in PEN with respect to Co is observed. The experimental findings and calculation results are interpreted by a pz-d hybridization model, in which spin-dependent bonding-antibonding splitting of molecular orbitals happens at metal-organic spinterfaces.