Dresden 2011 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 63: Poster II (Surface Magnetism/ Magnetic Imaging/ Topological Insulators/ Spin Structures and Magnetic Phase Transitions/ Graphene/ Magnetic Thin Films/ Magnetic Semiconductors/ Magnetic Half-metals and Oxides/ Spin-dependent Transport/ Spin Excitations and Spin Torque/ Spin Injection and Spin Currents in Heterostructures/ Spintronics/ Magnetic Storage and Applications)

MA 63.56: Poster

Freitag, 18. März 2011, 11:00–14:00, P2

The interface of the ferromagnetic metal CoS₂ and the nonmagnetic semiconductor FeS₂ — •Udo Schwingenschlögl and Safdar Nazir — PSE Division, KAUST, Thuwal 23955-6900, Kingdom of Saudi Arabia

The electronic and magnetic properties of the cubic pyrite CoS₂/FeS₂ interface are studied using the all-electron full-potential linearized augmented plane wave method. We find that this contact between a ferromagnetic metal and a nonmagnetic semiconductor shows a metallic character. The CoS₂ stays close to half-metallicity at the interface, while the FeS₂ becomes metallic. The magnetic moment of the Co atoms at the interface slightly decreases as compared to the bulk value and a small moment is induced on the Fe atoms. Furthermore, at the interface ferromagnetic ordering is found to be energetically favorable as compared to antiferromagnetic ordering.

Reference: Appl. Phys. Lett. 97, 183113 (2010)