凝聚态物理
各向异性
堆栈(抽象数据类型)
磁阻尼
垂直的
常量(计算机编程)
磁各向异性
磁场
物理
领域(数学)
材料科学
光学
磁化
量子力学
几何学
纯数学
振动
数学
计算机科学
程序设计语言
作者
Hyon-Seok Song,Kyeong-Dong Lee,Jeong-Woo Sohn,See‐Hun Yang,S. Parkin,Chun‐Yeol You,Sung‐Chul Shin
摘要
We investigate the intrinsic Gilbert damping constant in perpendicular magnetic anisotropy Co/Ni multilayer system by means of an all-optical method. We find that the intrinsic Gilbert damping constant does not depend on the stack number and the perpendicular magnetic anisotropy when the magnetic field is high enough. In contrast, the extrinsic Gilbert damping is strongly correlated with the inhomogeneous anisotropy distribution in the low-field regime, as observed in magneto-optical images. Intriguingly, the extrinsic Gilbert damping is consistently reduced with decreasing length scale in the measurements, providing a concrete means to determine the intrinsic Gilbert damping.
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