Micromagnetic modeling of magnetization switching driven by spin-polarized current in magnetic tunnel junctions
Micromagnetic modeling of magnetization switching driven by spin-polarized current in magnetic tunnel junctions
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DOI：
10.1063/1.2496202
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发表时间：
2007-03-15
影响因子：
3.2
通讯作者：
Torres, L.
中科院分区：
文献类型：
--
作者：
Finocchio, G.;Azzerboni, B.;Torres, L.
本文介绍了磁隧道结中自旋极化电流驱动的磁化翻转的微磁学模拟结果。对于所研究的结构，并为所有的模拟电流，开关发生通过成核过程。一个完整的研究如何错位的所施加的领域和非理想的形状的样品影响的开关行为也已执行。主要结果如下：（a）开关机制不改变定性通过引入一个错位和（B）相反，开关机制的定性变化时，引入一个非理想的形状。最后，模拟，包括一个77 K的热浴的影响，这些表明，开关时间比零温度模拟（有时也小于50%）。(c)2007年，美国物理学会。
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 also been performed. The main results are as follows: (a) The switching mechanism does not change qualitatively by introducing a misalignment and (b) In contrast, the switching mechanism changes qualitatively when a nonideal shape is introduced. Lastly, simulations that include the effects of a 77 K thermal bath are presented; these indicate that the switching times are shorter than for zero temperature simulations (sometimes also less than 50%). (c) 2007 American Institute of Physics.