Thickness dependence of spin torque effect in Fe/MgO/Fe magnetic tunnel junction: Implementation of divide-and-conquer with first-principles calculation

Bao Huei Huang, Chia Chia Chao, Yu Hui Tang

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

In this study, we develop a divide-and-conquer (DC) method under the framework of first-principles calculation to prevent directly solving Hamiltonian of a large device with time-consuming self-consistent process. The DC implementation combined with JunPy package reveals the oscillatory decay of layer-resolved spin torques away from the MgO/Fe interface, and suggests a very thin Fe layer thickness below 2 nm to preserve the efficient current-driven magnetization switch. This newly developed JunPy-DC calculation may efficiently resolve current self-consistent difficulties in noncollinear spin torque effects for novel spintronic applications with complex magnetic heterostructures.

原文???core.languages.en_GB???
文章編號015036
期刊AIP Advances
11
發行號1
DOIs
出版狀態已出版 - 1 1月 2021

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