Precessional switching of submicrometer spin valves
Precessional switching of submicrometer spin valves
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DOI：
10.1063/1.1470704
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发表时间：
2002-04
影响因子：
4
通讯作者：
S. Kaka;S. Russek
中科院分区：
文献类型：
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作者：
S. Kaka;S. Russek
使用沿磁化难轴施加的亚纳秒场脉冲来切换小型自旋阀。随着持续时间从 325 ps 减少到 230 ps，测量到的脉冲硬轴场切换概率会增加。这表明响应横向施加场的大角度进动运动。该行为通过单域 Landau-Lifshitz 模拟进行建模。以这种方式进行切换仅需要单极性横向脉冲来切换磁性装置的状态。与使用沿两个方向的长持续时间场脉冲的传统准静态开关相比，该过程消耗的能量更少。
Small spin valves are switched using a subnanosecond field pulse applied along the magnetization hard axis. The measured probability for switching due to pulsed hard-axis fields increases as the duration is decreased from 325 to 230 ps. This indicates a large-angle precessional motion in response to the transverse applied field. The behavior is modeled with a single-domain, Landau–Lifshitz simulation. Switching in this manner requires only single-polarity transverse pulses that toggle the state of magnetic devices. This process consumes less energy than traditional quasi-static switching using long-duration field pulses along both directions.