1.
Nils Petter Jørstad; Simone Fiorentini; Johannes Ender; Wolfgang Goes; Siegfried Selberherr; Viktor Sverdlov
Micromagnetic modeling of SOT-MRAM dynamics Journal Article
In: Physica B: Condensed Matter, vol. 676, pp. 415612, 2024, ISSN: 0921-4526.
Abstract | Links | BibTeX | Tags: Domain walls, iDMI, Micromagnetics modeling, Rashba-Edelstein effect, SOT-MRAM
@article{JORSTAD2024415612,
title = {Micromagnetic modeling of SOT-MRAM dynamics},
author = {Nils Petter Jørstad and Simone Fiorentini and Johannes Ender and Wolfgang Goes and Siegfried Selberherr and Viktor Sverdlov},
url = {https://www.sciencedirect.com/science/article/pii/S0921452623009791},
doi = {https://doi.org/10.1016/j.physb.2023.415612},
issn = {0921-4526},
year = {2024},
date = {2024-01-01},
urldate = {2024-01-01},
journal = {Physica B: Condensed Matter},
volume = {676},
pages = {415612},
abstract = {We present a flexible and efficient approach to modeling the magnetization dynamics in modern SOT-MRAM cells, by coupling charge, spin, and magnetization dynamics in a three-dimensional framework. We expand on existing literature, to obtain spin current boundary conditions for modeling the Rashba-Edelstein effect. We compute the spin–orbit torques originating from both, the spin Hall and Rashba-Edelstein effect, and show that our model can reproduce experimental results for the thickness dependence of the spin torques in an Ir/CoFeB bilayer structure. Furthermore, we verify our approach by simulating magnetization reversal in field-free SOT-MRAM cells, and show that with the inclusion of the interfacial Dzyaloshinskii–Moriya interaction, we obtain domain wall motion similar to previously reported experimental results.},
keywords = {Domain walls, iDMI, Micromagnetics modeling, Rashba-Edelstein effect, SOT-MRAM},
pubstate = {published},
tppubtype = {article}
}
We present a flexible and efficient approach to modeling the magnetization dynamics in modern SOT-MRAM cells, by coupling charge, spin, and magnetization dynamics in a three-dimensional framework. We expand on existing literature, to obtain spin current boundary conditions for modeling the Rashba-Edelstein effect. We compute the spin–orbit torques originating from both, the spin Hall and Rashba-Edelstein effect, and show that our model can reproduce experimental results for the thickness dependence of the spin torques in an Ir/CoFeB bilayer structure. Furthermore, we verify our approach by simulating magnetization reversal in field-free SOT-MRAM cells, and show that with the inclusion of the interfacial Dzyaloshinskii–Moriya interaction, we obtain domain wall motion similar to previously reported experimental results.