Spin and energy analysis of electron beams:: Coupling a polarimeter based on exchange scattering to a hemispherical analyzer
Spin and energy analysis of electron beams:: Coupling a polarimeter based on exchange scattering to a hemispherical analyzer
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DOI：
10.1063/1.1512342
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发表时间：
2002-11-01
影响因子：
1.6
通讯作者：
Ciccacci, F
中科院分区：
文献类型：
--
作者：
Bertacco, R;Marcon, M;Ciccacci, F
我们将一种基于磁化目标交换散射的高效旋光仪耦合到半球形分析器上。目标是Fe（001）-p（1x 1）O表面，其在4-6 eV电子动能范围内产生高度自旋相关的散射。由于低散射能量，从分析器出口狭缝到目标的转移电子光学系统的设计是非常关键的。我们详细描述了所采用的解决方案沿着整个装置的性能。对于分析仪通过能量的低值，我们测得总效率为7 × 10（-4），分析能力（谢尔曼函数）为0.2。作为应用的一个例子，从Fe（001）自旋分辨光电发射数据报告。(C)2002年美国物理学会。
We have coupled a high efficiency polarimeter based on exchange scattering from a magnetized target to a hemispherical analyzer. The target is a Fe(001)-p(1x1)O surface which gives rise to highly spin-dependent scattering in the 4-6 eV electron kinetic energy range. Due to the low scattering energy, the design of the transfer electron optics from the analyzer exit slit to the target is really crucial. We describe in detail the adopted solution along with the performances of the entire apparatus. For low values of the analyzer pass energy we have measured an overall efficiency of 7x10(-4) with an analyzing power (Sherman function) of 0.2. As an example of application spin-resolved photoemission data from Fe(001) are reported. (C) 2002 American Institute of Physics.