Magnetic circular dichroism at the K and L edges of Co and Cu in Co/Cu(001)
Magnetic circular dichroism at the K and L edges of Co and Cu in Co/Cu(001)
复制标题
Co/Cu(001) 中 Co 和 Cu 的 K 和 L 边缘的磁性圆二色性
DOI：
10.1063/1.361982
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发表时间：
1996
影响因子：
3.2
通讯作者：
A. Freeman
中科院分区：
文献类型：
--
作者：
R. Wu;A. Freeman
用全势线性缀加平面波方法研究了面心立方结构的Co/Cu（001）体系。通过原子力的方法，大的多层弛豫（6.5%，5.3%和2.8%）被发现相邻的铜层之间，这减少了128毫电子伏的总能量。Co原子的自旋和轨道磁矩分别为1.79和0.12 μB。在界面Cu位，我们发现了一个相当大的感应磁矩，0.05 μB，它可以分为d（0.074 μB）和s，p（0.024 μB）的贡献。有趣的是，d态和s，p态的自旋极化可以通过L边和K边的磁圆二色性分别检测到，计算结果与实验符合得很好。
The fcc Co/Cu(001) system is investigated using the full potential linearized augmented plane wave method. Through the atomic force approach, large multilayer relaxations (6.5%, 5.3%, and 2.8%) are found between the adjacent Cu layers, which reduces the total energy by 128 meV. The spin and orbital magnetic moments for Co atoms are 1.79 and 0.12 μB, respectively. At the interfacial Cu site, we found a sizable induced magnetic moment, 0.05 μB, which can be split into d (0.074 μB) and s,p(0.024 μB) contributions. Interestingly, the spin polarization of d and s,p states can be detected separately through the magnetic circular dichroism at the L and K edges, for which the calculated results agree very well with experiments.