Spin-resolved photoemission of surface states of W(110)-(1 x 1)H
Spin-resolved photoemission of surface states of W(110)-(1 x 1)H
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DOI：
10.1103/physrevlett.89.216802
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发表时间：
2002-11-18
影响因子：
8.6
通讯作者：
Kevan, SD
中科院分区：
文献类型：
--
作者：
Hochstrasser, M;Tobin, JG;Kevan, SD
用自旋分辨和角分辨光电子能谱测量了W（110）-（1 × 1）H的表面电子态。我们直接表明，表面带分裂和自旋极化的自旋轨道相互作用与表面附近的反演对称性的损失。我们观察到表面态的100%自旋极化，自旋在表面平面内对齐，并相对于（S）棒对称点以圆形方式取向。与此相反，没有可测量的极化附近的体状态观察。
The surface electronic states of W(110)-(1 x 1)H have been measured using spin- and angle-resolved photoemission. We directly demonstrate that the surface bands are both split and spin-polarized by the spin-orbit interaction in association with the loss of inversion symmetry near a surface. We observe 100% spin polarization of the surface states, with the spins aligned in the plane of the surface and oriented in a circular fashion relative to the (S) over bar symmetry point. In contrast, no measurable polarization of nearby bulk states is observed.