Thermally induced dynamics in ultrathin magnetic tunnel junctions

被引：14
|
作者：
Ogrodnik, P. [1 ,2 ]
Bauer, G. E. W. [3 ,4 ]
Xia, Ke [5 ]
机构：
[1] Warsaw Univ Technol, Fac Phys, PL-00662 Warsaw, Poland
[2] Polish Acad Sci, Inst Mol Phys, PL-60179 Poznan, Poland
[3] Tohoku Univ, Inst Mat Res & WPI AIMR, Sendai, Miyagi 9808577, Japan
[4] Delft Univ Technol, Kavli Inst Nanosci, NL-2628 CJ Delft, Netherlands
[5] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China
来源：
PHYSICAL REVIEW B | 2013年 / 88卷 / 02期
基金：
美国国家科学基金会;
关键词：
SPIN-TRANSFER-TORQUE; DRIVEN;
D O I：
10.1103/PhysRevB.88.024406
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We consider the magnetization dynamics induced by thermally induced spin transfer torques in thin Fe vertical bar MgO vertical bar Fe tunnel junctions. The magnetization dynamics is described by the Landau-Lifshitz-Gilbert equation, including the thermal torques as computed from first principles. We show that the angular skewness of the torques importantly modifies the dynamics, e. g., leading to different instability criteria.
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页数：11
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