Numerical Study on Spin Torque Switching in Thermally Activated Region
Numerical Study on Spin Torque Switching in Thermally Activated Region
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DOI：
10.1143/apex.5.063009
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发表时间：
2012-06-01
影响因子：
2.3
通讯作者：
Imamura, Hiroshi
中科院分区：
文献类型：
--
作者：
Taniguchi, Tomohiro;Shibata, Mitsutoshi;Imamura, Hiroshi
通过数值求解Landau-Lifshitz-吉尔伯特方程，研究了热激活区单个自由层的自旋矩翻转。我们发现面内磁化系统的开关时间与温度的关系是非线性的，即B不等于1。这里，B是开关速率公式中电流项的指数，并且被广泛地假设为1。这一结果使我们能够评估自旋电子器件的热稳定性。(C)2012日本应用物理学会
We studied the spin torque switching of a single free layer in the thermally activated region by numerically solving the Landau-Lifshitz-Gilbert equation. We found that the temperature dependence of the switching time of the in-plane magnetized system is nonlinear, which means b not equal 1. Here, b is the exponent of the current term in the switching rate formula and has been widely assumed to be unity. This result enables us to evaluate the thermal stability of spintronics devices. (C) 2012 The Japan Society of Applied Physics