Spin-reorientation transition of Ni/Cu(100) and CO/Ni/Cu(100): Separation of the surface and bulk components of the X-ray magnetic circular dichroism spectrum
Spin-reorientation transition of Ni/Cu(100) and CO/Ni/Cu(100): Separation of the surface and bulk components of the X-ray magnetic circular dichroism spectrum
复制标题
DOI：
10.1103/physrevb.71.214420
复制
发表时间：
2005-06-01
影响因子：
3.7
通讯作者：
Yokoyama, T
中科院分区：
文献类型：
--
作者：
Amemiya, K;Sakai, E;Yokoyama, T
采用深度分辨X射线磁圆二色性（XMCD）技术研究了Ni/Cu(100)和CO/Ni/Cu(100)薄膜的自旋取向转变。分别提取表面层和内层的 XMCD 光谱。对于裸镍薄膜，表层的面内轨道磁矩显着增强。相反，内层表现出比面内层更大的垂直轨道磁矩。 CO 吸附后，表面磁化强度急剧降低，而内层不受影响。这些结果直接解释了 Ni/Cu(100) 和 CO/Ni/Cu(100) 中的自旋取向转变。
The spin-reorientation transition of Ni/Cu(100) and CO/Ni/Cu(100) films was investigated with the depth-resolved x-ray magnetic circular dichroism (XMCD) technique. The XMCD spectra from the surface and inner layers were separately extracted. As for the bare Ni films, the in-plane orbital magnetic moment in the surface layer is significantly enhanced. In contrast, the inner layers exhibit larger perpendicular orbital magnetic moment than the in-plane one. Upon CO adsorption, the surface magnetization is drastically reduced, while the inner layers are unaffected. These results directly explain the spin-reorientation transition in Ni/Cu(100) and CO/Ni/Cu(100).