Micromagnetic analysis of geometrically controlled current-driven magnetization switching
نویسندگان
چکیده
منابع مشابه
Micromagnetic modeling of magnetization switching driven by spin-polarized current in magnetic tunnel junctions
This paper presents results of micromagnetic simulations of magnetization switching driven by spin-polarized current in magnetic tunnel junctions. For the studied structures, and for all the simulated currents, the switching occurs via nucleation process. A complete study of how a misalignment of the applied field and nonidealities in the shape of the sample affect the switching behavior has al...
متن کاملMicromagnetic simulations of current-induced magnetization switching in Co/Cu/Co nanopillars
We studied the current-induced magnetic switching in Co/Cu/Co nanopillars with an in-plane magnetization traversed by a perpendicular-to-plane spin-polarized current. The Landau-LifshitzGilbert equation incorporating the spin transfer torque STT effect was employed. Magnetization switching was found to take place when the current density exceeds a threshold. It is accompanied by drastic oscilla...
متن کاملMechanisms of spin-polarized current-driven magnetization switching.
The mechanisms of the magnetization switching of magnetic multilayers driven by a current are studied by including exchange interaction between local moments and spin accumulation of conduction electrons. It is found that this exchange interaction leads to two additional terms in the Landau-Lifshitz-Gilbert equation: an effective field and a spin torque. Both terms are proportional to the trans...
متن کاملMultiscale modeling of current-driven magnetization dynamics
Understanding magnetization dynamics in magnetic materials under external current control plays a vital role in magnetic storage devices, such as magnetoresistance random access memories and race-track memories. In this presentation, we will discuss how to model such a phenomenon at different spatial and temporal scales. Consequently, a series of models is obtained with increasing accuracy. Eff...
متن کاملOn a Model of Magnetization Switching by Spin-polarized Current
This paper is concerned with global existence of weak solutions to a model equations of magnetization reversal by spin-polarized current in a layer introduced in [18]. The local magnetization of the ferromagnet satisfies the usual Landau-Lifshitz equation which is coupled to the nonlinear heat equation satisfied by the spin accumulation field defined in all the layer. The coupling is due to the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: AIP Advances
سال: 2017
ISSN: 2158-3226
DOI: 10.1063/1.4973749