Large out-of-plane spin polarization in a spin-splitting one-dimensional metallic surface state on Si(557)-Au
Large out-of-plane spin polarization in a spin-splitting one-dimensional metallic surface state on Si(557)-Au
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DOI：
10.1103/physrevb.82.161410
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发表时间：
2010-10-15
影响因子：
3.7
通讯作者：
Oguchi, Tamio
中科院分区：
文献类型：
--
作者：
Okuda, Taichi;Miyamaoto, Koji;Oguchi, Tamio
我们报告了用自旋和角分辨光电子能谱法获得的Si(557)-Au体系的自旋分裂一维金属表面态的证据。引人注目的是，观察到相当大的面外自旋极化锁定在一个特定的方向上，这与由第一性原理计算预测的金链的高度各向异性波函数引起的一维Rashba自旋分裂表面态很好地吻合。
We report evidence of a spin-split one-dimensional metallic surface state for the system of Si(557)-Au obtained by means of spin-and angle-resolved photoelectron spectroscopy. Strikingly, considerably large out-of-plane spin polarization which is locked to one specific direction has been observed which is in good agreement with the one-dimensional Rashba spin-splitting surface states caused by the highly anisotropic wave function of the gold chains predicted by first-principles calculation.