Angrick C, Braun J, Ebert H, Donath M
Physikalisches Institut, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany.
Department Chemie, Physikalische Chemie, Ludwig-Maximilians-Universität, Butenandtstraße 11, 81377 München, Germany.
J Phys Condens Matter. 2020 Mar 17;33(11):115001. doi: 10.1088/1361-648X/abd338.
Spin-dependent reflection of low-energy electrons at the W(110) surface caused by spin-orbit interaction was studied experimentally and theoretically. Comprehensive information for a wide range of electron incidence angles and energies was collected via maps for the reflectivity, the spin-dependent reflection asymmetry, and the figure of merit of the spin separation. The experimental results are compared with calculations of the scattering process using a realistic surface potential barrier. The results are discussed in view of possible applications of W(110) as a scattering target in spin-polarization detectors. Possible working points for use in single- as well as multi-channel spin-polarization-detection devices are identified and discussed.
通过实验和理论研究了自旋轨道相互作用引起的低能电子在W(110)表面的自旋相关反射。通过反射率、自旋相关反射不对称性和自旋分离品质因数的图谱，收集了广泛的电子入射角和能量范围内的综合信息。将实验结果与使用实际表面势垒的散射过程计算结果进行了比较。鉴于W(110)作为自旋极化探测器中的散射靶的可能应用，对结果进行了讨论。确定并讨论了单通道和多通道自旋极化检测装置中可能的工作点。
