Dresden 2011 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 81: [MA] Surface magnetism IV
O 81.8: Vortrag
Donnerstag, 17. März 2011, 17:00–17:15, HSZ 103
Dzyaloshinskii-Moriya interaction in 3d-5d zig-zag biatomic chains — V. Kashid1, •B. Zimmermann2, T. Schena2, Ph. Mavropoulos2, H. G. Salunke3, V. Shah4, Y. Mokrousov2, and S. Blügel2 — 1Department of Physics, University of Pune, Pune 411 007, India — 2Peter Grünberg Institut & Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany — 3Technical Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India — 4Interdisciplinary School of Scientific Computing, University of Pune, Pune 411 007, India
We investigate from first principles the influence of the antisymmetric Dzyaloshinskii-Moriya interaction (DMI) on the magnetic properties of free-standing zig-zag biatomic chains consisting of 3d (Fe, Co) and 5d (Ir, Pt, Au) transition-metal atoms.
Using the FLEUR code [1], we perform self-consistent spin-spiral calculations while treating the spin-orbit interaction within first-order perturbation theory [2]. In this way we can extract the strength of DMI and analyze it in terms of the electronic structure of the chains. Moreover, within a simple tight-binding model we are able to grasp main features of the DMI in these systems and characterize them in terms of symmetry, band-filling and spin-spiral vector.
We acknowledge funding under HGF-YIG Programme VH-NG-513.
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M. Heide, G. Bihlmayer, S. Blügel, Physica B 404, 2678 (2009)