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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Study of spin transfer torque in serially connected pillars by means of ferromagnetic resonance
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Study of spin transfer torque in serially connected pillars by means of ferromagnetic resonance

机译：利用铁磁共振研究串联柱中自旋传递转矩

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摘要

We investigate the influence of the spin polarized current on magnetic damping in the ferromagnetic layers of pillar structures by means of ferromagnetic resonance (FMR). The pillars are prepared and electrically contacted by high-resolution electron beam lithography and electron beam evaporation in a multi-step process. FMR measurements are carried out on a pillar array, in which all pillars are connected in series, so that the current density reaches values high enough to observe the effect of the spin transfer torque on the FMR signal. The temperature rise due to the high current density is avoided by cooling. An influence of the spin transfer torque effect on the intrinsic damping in the ferromagnet is observed. The fabrication of the serial connection can be easily applied to arbitrary structures.
机译：我们通过铁磁共振（FMR）研究了自旋极化电流对柱结构铁磁层中磁阻尼的影响。通过多步工艺通过高分辨率电子束光刻和电子束蒸发制备并电接触柱。 FMR测量在柱阵列上执行，在柱阵列中所有柱均串联连接，因此电流密度达到足够高的值，从而可以观察到自旋传递转矩对FMR信号的影响。通过冷却避免了由于高电流密度引起的温度上升。观察到自旋传递转矩效应对铁磁体中固有阻尼的影响。串行连接的制造可以容易地应用于任意结构。

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