Dynamic Magnetic Intermediate State during Nanosecond Spin Transfer Switching for MgO-Based Magnetic Tunnel Junctions

被引：7
作者：
Aoki, Tatsuya [1 ]
Ando, Yasuo [1 ]
Oogane, Mikihiko [1 ]
Naganuma, Hiroshi [1 ]
机构：
[1] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 9808579, Japan
来源：
APPLIED PHYSICS EXPRESS | 2010年 / 3卷 / 05期
关键词：
TRANSFER-TORQUE; WAVES;
D O I：
10.1143/APEX.3.053002
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report for the first time that the dynamic magnetic intermediate state (DMI) was observed at a speed of several ns during spin transfer switching for MgO-based magnetic tunnel junctions (MTJs). The DMI was observed as slow resistance oscillation at the center of the parallel to anti-parallel state by single shot time domain measurements. The DMI is observable at certain current amplitudes. The outbreak probability decreases with further current increase. We concluded that the DMI originates from inhomogeneous magnetization behavior. On the other hand, previous single shot time domain measurements have shown only for single-domain-like magnetization behavior. (C) 2010 The Japan Society of Applied Physics
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页数：3
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