1 research outputs found
Enhanced Magnetic Anisotropy via Quasi-Molecular Magnet at Organic-Ferromagnetic Contact
To realize the origin of efficient spin injection at
organic-ferromagnetic
contact in organic spintronics, we have implemented the formation
of quasi-molecular magnet via surface restructuring of a strong organic
acceptor, tetrafluoro-tetracyano-quinodimethane (F4-TCNQ), in contact
with ferromagnetic cobalt. Our results demonstrate a spin-polarized
F4-TCNQ layer and a remarkably enhanced magnetic anisotropy of the
Co film. The novel magnetic properties are contributed from strong
magnetic coupling caused by the molecular restructuring that displays
an angular anchoring conformation of CN and upwardly protruding fluorine
atoms. We conclude that the π bonds of CN, instead of the lone-pair
electrons of N atoms, contribute to the hybridization-induced magnetic
coupling between CN and Co and generate a superior magnetic order
on the surface