Controlling the nonequilibrium interlayer exchange coupling in asymmetric magnetic tunnel junctions

Y. H. Tang, Nicholas Kioussis, Alan Kalitsov, W. H. Butler, Roberto Car

研究成果: 雜誌貢獻期刊論文同行評審

42 引文 斯高帕斯(Scopus)

摘要

We predict an oscillatory bias behavior of the fieldlike spin torque, T, in magnetic tunnel junctions, which can be selectively controlled via the asymmetry in band filling between the ferromagnetic leads. This can lead to a linear or quadratic low-bias behavior, including tuning the bias-induced reversal of T. These findings reconcile the apparently contradictory experimental results recently reported in the literature. The underlying mechanism for the nonequilibrium interlayer exchange coupling (IEC) of noncollinear configurations is the interplay of four independent IEC for the majority- and minority-spin bands of the leads solely in the ferromagnetic configuration.

原文???core.languages.en_GB???
文章編號057206
期刊Physical Review Letters
103
發行號5
DOIs
出版狀態已出版 - 6 8月 2009

指紋

深入研究「Controlling the nonequilibrium interlayer exchange coupling in asymmetric magnetic tunnel junctions」主題。共同形成了獨特的指紋。

引用此