Switching in spin-valve devices in response to subnanosecond longitudinal field pulses
Switching in spin-valve devices in response to subnanosecond longitudinal field pulses
复制标题
自旋阀器件响应亚纳秒纵向场脉冲的切换
DOI：
10.1063/1.372716
复制
发表时间：
2000
影响因子：
3.2
通讯作者：
S. Russek
中科院分区：
文献类型：
--
作者：
S. Kaka;S. Russek
我们在高速测试结构中制造了自旋阀器件，该结构允许亚纳秒脉冲场激励和磁阻响应的高带宽观察。对于低幅度场脉冲，开关响应会有所不同，对于较高幅度的场脉冲，开关响应接近小于 1 ns 的一致快速开关。对于多种脉冲宽度和幅度，该器件会切换到亚稳态。对于持续时间小至 250 ps 的脉冲，将写入脉冲的阈值幅度测量为脉冲持续时间的函数。
We have fabricated spin-valve devices in a high-speed test structure that allows subnanosecond pulsed field excitation and high-bandwidth observation of the magnetoresistance response. The switching response varies for low-amplitude field pulses and approaches a consistent fast switch of less than 1 ns for field pulses of higher amplitude. For several pulse widths and amplitudes, the device switches into metastable states. The threshold amplitude of the write-pulse was measured as a function of pulse duration for pulses as small as 250 ps in duration.