Regensburg 2016 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 48: Poster Session II
MA 48.44: Poster
Donnerstag, 10. März 2016, 15:00–18:00, Poster B1
Side-jump contribution to the spin Hall effect within a phase shift model — •Christian Herschbach1, Dmitry Fedorov2,1, Martin Gradhand3, Kristina Chadova4, Diemo Ködderitzsch4, Hubert Ebert4, 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 — 4Ludwig-Maximilians University, Munich, Germany
A precise theoretical description of the spin Hall effect (SHE) requires exhaustive and demanding ab initio calculations by means of relativistic codes.
For a simplified description of the skew-scattering contribution to the SHE, several model approaches employing the scattering phase shifts were developed [1-5].
A corresponding resonant scattering model for the side-jump mechanism was proposed [3] as well.
Here, we present a generalized phase shift model for the description of side-jump.
Its validity is studied in comparison to ab initio calculations performed within the Kubo-Středa approach [6].
Furthermore, we discuss the results in the light of the simplified approximation of Ref. [3].
It is shown that the model’s restriction to impurity properties cannot reproduce the results of first-principles calculations, which, therefore, seem to be inevitable for reliable predictions.
[1] Fert et al., JMMM 24, 231 (1981); [2] Guo et al., PRL 102, 036401 (2009); [3] Fert and Levy, PRL 106, 157208 (2011); [4] Fedorov et al., PRB 88, 085116 (2013); [5] Herschbach et al., PRB 88, 205102 (2013); [6] Chadova et al., PRB 92, 045120 (2015).