A three-dimensional spin-diffusion model for micromagnetics

Abert, Claas and Ruggeri, Michele and Bruckner, Florian and Vogler, Christoph and Hrkac, Gino and Praetorius, Dirk and Suess, Dieter (2015) A three-dimensional spin-diffusion model for micromagnetics. Scientific Reports, 5. 14855. ISSN 2045-2322 (https://doi.org/10.1038/srep14855)

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Abstract

We solve a time-dependent three-dimensional spin-diffusion model coupled to the Landau-Lifshitz-Gilbert equation numerically. The presented model is validated by comparison to two established spin-torque models: The model of Slonzewski that describes spin-torque in multi-layer structures in the presence of a fixed layer and the model of Zhang and Li that describes current driven domain-wall motion. It is shown that both models are incorporated by the spin-diffusion description, i.e., the nonlocal effects of the Slonzewski model are captured as well as the spin-accumulation due to magnetization gradients as described by the model of Zhang and Li. Moreover, the presented method is able to resolve the time dependency of the spin-accumulation.

  • Item type:Article
    ID code:80319
    Dates:
    Date
    Event
    7 October 2015
    Published
    25 August 2015
    Accepted
    Notes:Funding Information: The financial support by the Austrian Federal Ministry of Science, Research and Economy and the National Foundation for Research, Technology and Development as well as the Austrian Science Fund (FWF) under grant W1245 and F4102 SFB ViCoM, the innovative projects initiative of Vienna University of Technology, the Vienna Science and Technology Fund (WWTF) under grant MA14-044, and the Royal Society under UF080837 is gratefully acknowledged.
    Subjects:Science > Mathematics
    Department:Faculty of Science > Mathematics and Statistics
    Depositing user: Pure Administrator
    Date deposited:28 Apr 2022 09:59
    Last modified:20 Apr 2024 00:49
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/80319
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