Spin-polarized photoemission of
Spin-polarized photoemission of
复制标题
自旋偏振光电子发射
DOI：
10.1088/0953-8984/8/10/026
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
J. Matthew
中科院分区：
文献类型：
--
作者：
Y. B. Xu;C. Walker;D. Greig;E. Seddon;L W Kirkman;F. Quinn;J. Matthew
首次使用同步加速器源对铁硼非晶合金进行自旋分辨光电发射实验。 d 带的实验自旋极化与三个理论预测进行了比较，发现与基于超级单元 LMTO 方法的自洽自旋极化计算最为一致。观察到的价带平均自旋极化大约是 10 eV 二次电子的两倍。从 1 eV 和 20 eV 二次电子不对称性确定的磁滞回线与使用磁光克尔效应确定的磁滞回线相似，但显示出较低的矫顽力。差异归因于两种技术的不同采样深度的组合以及样品表面的不均匀性。
The first spin-resolved photoemission experiment on an iron - boron amorphous alloy using a synchrotron source is presented. The experimental spin polarization of the d band of has been compared with three theoretical predictions and found to be in best agreement with self-consistent spin-polarized calculations based on a supercell LMTO approach. The observed average spin polarization of the valence band is approximately twice that of 10 eV secondary electrons. Hysteresis loops for determined from the 1 eV and 20 eV secondary-electron asymmetry are similar to those determined using the magnetooptic Kerr effect, but show a lower coercivity. The differences are attributed to a combination of different sampling depths of the two techniques and to the surface inhomogeneity of the sample.