Berlin 2015 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 20: POSTER Ib
MA 20.38: Poster
Dienstag, 17. März 2015, 09:30–13:00, Poster A
Anomalous Hall Effect within a phase shift model — •Albert Hönemann1, Christian Herschbach1,2, Dmitry Fedorov2,1, Martin Gradhand3, and Ingrid Mertig1,2 — 1Martin Luther University Halle-Wittenberg, Halle, Germany — 2Max Planck Institute of Microstructure Physics, Halle, Germany — 3University of Bristol, Bristol, United Kingdom
The spin Hall effect (SHE) and the anomalous Hall effect (AHE) are closely related transport phenomena both caused by spin-orbit coupling (SOC). Their straightforward theoretical description requires rigorous but demanding ab initio calculations based on relativistic codes. Recently, phase shift models [1,2] were developed as a generalization of the resonant scattering models [3-6]. They provide a simplified description of the SHE with a good qualitative agreement to first-principles results obtained for dilute alloys based on host crystals with free-electron like Fermi surfaces and weak SOC [7].
Here, we employ these phase shift models for a description of the AHE caused by 3d impurities in noble metals. The obtained results are compared to the corresponding ab initio calculations performed within a semiclassical approach of Ref. [8].
[1] Fedorov et al., PRB 88, 085116 (2013); [2] Herschbach et al., PRB 88, 205102 (2013); [3] Fert et al., J. Magn. Magn. Mater. 24, 231 (1981); [4] Guo et al., PRL 102, 036401 (2009); [5] Fert and Levy, PRL 106, 157208 (2011); [6] Levy et al., PRB 88, 214432 (2013); [7] Johansson et al., J. Phys.: Condens. Matter 26, 274207 (2014); [8] Zimmermann et al., arXiv:1406.2712.