Spin splitting of an Au(111) surface state band observed with angle resolved photoelectron spectroscopy
Spin splitting of an Au(111) surface state band observed with angle resolved photoelectron spectroscopy
复制标题
DOI：
10.1103/physrevlett.77.3419
复制
发表时间：
1996-10-14
影响因子：
8.6
通讯作者：
Jensen, E
中科院分区：
文献类型：
--
作者：
LaShell, S;McDougall, BA;Jensen, E
Au(111)Sp表面态的高动量分辨角分辨光电子能谱表现为双重态。峰间距随k(平行于)线性增加，当其中一个带跨过费米能级时，在0.153埃(-1)处达到最大值110 meV。这些结果被解释为自旋分裂表面态能带，自旋在垂直于电子动量的表面平面上排列。分裂的起源是自旋-轨道耦合，它可以打破缺乏反转对称性的系统的自旋简并。
High momentum resolution angle resolved photoemission spectra from the Au(lll) sp-derived surface state exhibit a doublet. The separation between the peaks increases linearly with k(parallel to), and reaches a maximum of 110 meV at 0.153 Angstrom(-1), when one of the bands crosses the Fermi level. These results are interpreted as spin-split surface state bands, with the spins aligned in the plane of the surface perpendicular to the electronic momentum. The origin of the splitting is spin-orbit coupling, which can break spin degeneracy in systems which lack inversion symmetry.