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MA: Fachverband Magnetismus

MA 11: Spin-dependent Transport Phenomena II

MA 11.2: Vortrag

Montag, 26. März 2012, 17:30–17:45, H 1012

Spin-orbit scattering in molecular transport — •Pengxiang Xu, Daniel Wortmann, and Stefan Blügel — Peter Grünberg Institut & Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany

Spin-orbit interaction generally does not play an important role in molecular junctions since many molecules considered for molecular transport devices typically contain only light elements. Therefore, the use of heavier elements in molecules proposed for magnetic transport setups can lead to interesting behavior in spin-polarized transport due to the coupling of the spins to the electric polarization of the molecule.

Applying ab-initio density functional theory in the framework of the linearized-augmented plane-wave method [1] and the Green function formalism for transport [2], we study some model systems with different magnetization states (collinear/non-collinear) and molecular dipole moment. We report on our investigations of transport through molecules with ferromagnetic transition-metal centers and demonstrate that angular magnetoresistance (AMR) can be found in the transmission properties of the molecule under the influence of the spin-orbit coupling.

This work is supported by DFG priority program 1243.

[1]http://www.flapw.de

[2]D. Wortmann, H. Ishida, S. Blügel. PRB 66, 075113 (2002)