Experimental verification of a new spin-polarization effect in photoemission: Polarized photoelectrons from Pt(111) with linearly polarized radiation in normal incidence and normal emission.
Experimental verification of a new spin-polarization effect in photoemission: Polarized photoelectrons from Pt(111) with linearly polarized radiation in normal incidence and normal emission.
复制标题
光发射中新的自旋极化效应的实验验证：来自 Pt(111) 的偏振光电子，在法向入射和法向发射中具有线性偏振辐射。
DOI：
10.1103/physrevlett.60.651
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发表时间：
1988
影响因子：
8.6
通讯作者：
Heinzmann
中科院分区：
文献类型：
--
作者：
Schmiedeskamp;Vogt;Heinzmann
Tamura、Piepke和Feder对一种新的自旋效应的理论预测已经在实验上得到了验证：即使光电子是用线偏振辐射进行的，即使它是在垂直入射和垂直发射的高度对称的设置中进行研究的，光电子也可以被偏振。能量在21和22.4 eV之间的辐射从以10%和40%之间的程度极化的Pt（111）激发光电子。自旋方向与平行于表面的平面一致，并且当晶体围绕表面法线旋转60/sup 0/时改变其符号。
A theoretical prediction of a new spin effect by Tamura, Piepke, and Feder has been experimentally verified: Photoelectrons can be polarized even if the photoemission is performed with linearly polarized radiation and even if it is studied in the highly symmetrical setup of normal incidence and normal emission. Radiation with energies between 21 and 22.4 eV ejects photoelectrons from Pt(111) polarized with a degree between 10% and 40%. The spin direction coincides with a plane parallel to the surface and changes its sign when the crystal is rotated by 60/sup 0/ about the surface normal.