Spin effects in transport through nanoscopic systems with uniaxial magnetic anisotropy – Niels Bohr Institute - University of Copenhagen

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Niels Bohr Institute > Calendar > 2012 > Spin effects in transp...

Spin effects in transport through nanoscopic systems with uniaxial magnetic anisotropy

With the recent advent of experimental techniques allowing for addressing transport properties of individual atoms and molecules, systems exhibiting magnetic anisotropy such as magnetic adatoms [1] or molecules [2-4] have drawn much attention. It has been suggested, and also experimentally proven for magnetic atoms [5], that spin-polarized currents can be employed to control the magnetic state of such systems. Furthermore, it has been also demonstrated that magnetic anisotropy can play a major role in formation of the Kondo effect in nanoscopic systems [1,4]. Since the interaction between the system’s spin and currents may become a key feature to be utilized in future molecule-based devices, the understanding of transport processes through these systems is of prime importance. The talk will thus be devoted to discussing various theoretical aspects of transport through nanoscopic systems displaying magnetic anisotropy, with the main emphasis on how the flow of spin-polarized current through such a molecule/adatom can affect its magnetic state. [1] A.F. Otte et al., Nature Phys. 4, 847 (2008). [2] H.B. Heersche et al., Phys. Rev. Lett. 96, 206801 (2006). [3] A. Zyazin et al., Nano Lett. 10, 3307 (2010). [4] J.J. Parks et al., Science 328, 1370 (2010). [5] S. Loth et al., Nature Phys. 6, 340 (2010).

Speaker: Maciej Misiorny, Forschungszentrum Jülich, Peter Grünberg Institut, Theoretical Nanoelectronics Division (PGI-2), 52425 Jülich, Germany