论文标题
通过异常霍尔信号调节各向异性磁路及其在实时域壁速度测量中的应用
Modulation of anisotropic magnetoresistance by anomalous Hall signal and its application to real-time domain wall velocity measurement
论文作者
论文摘要
我们在这里提出了一种通过异常的霍尔信号调节各向异性磁阻（AMR）的方法，从而在接近矫正处测量域壁（DW）运动速度。我们研究纵向（RXX）霍尔几何形状的恒定场的磁化松弛。我们观察到出现在DW固定场上的不对称RXX峰。通过考虑异常霍尔电压的AMR调制来解释这种不寻常的磁化行为。在提出的方法中，使用磁化松弛，与其他显微镜方法相比，实时DW速度测量要容易得多。此外，来自异常霍尔电压的额外信号使该技术对DW速度测量更简单，敏感，这对于各种自旋传感应用可能很有用。
We present here a way to modulate the anisotropic magnetoresistance (AMR) by anomalous Hall signal and thus measure the domain wall (DW) motion velocity at near-coercivity. We study the magnetization relaxation at the constant field in the longitudinal (Rxx) Hall geometry. We observed asymmetric Rxx peaks that appear at the DW pinning fields. This unusual magnetoresistance behavior is explained by considering the AMR modulation by the anomalous Hall voltage. In the proposed method, using the magnetization relaxation, the real-time DW velocity measurement is much easier in comparison to the other microscopy methods. Moreover, the additional signal from anomalous Hall voltage makes this technique simpler and sensitive for DW velocity measurements, which can be useful for various spintronic sensing applications.
