Purely one-dimensional bands with a giant spin-orbit splitting: Pb nanoribbons on Si(553) surface
Purely one-dimensional bands with a giant spin-orbit splitting: Pb nanoribbons on Si(553) surface
复制标题
具有巨大自旋轨道分裂的纯一维能带：Si(553)表面上的Pb纳米带
作者：
M. Kopciuszyński;M. Krawiec;R. Zdyb;M. Jałochowski
我们报告了一个巨大的Rashba型分裂的金属带观察到的一维结构上的邻硅衬底。在Si（553）上的单个Pb层使该邻位表面有序化，从而形成单原子台阶的完美规则分布。虽然只有一层Pb，但该体系显示出很强的金属性和纯一维特征，表现为在平行于台阶边的方向上有多个穿过费米能级的表面态带，在垂直于台阶边的方向上有一个小的带隙。如自旋极化光电子能谱和密度泛函理论计算所示，这些表面态带是自旋极化的，并且与系统的其余部分完全解耦。实验观察到的0.6 eV的自旋分裂在室温下是最大的，现在发现在硅基金属纳米结构，这使得所考虑的系统在自旋电子器件中的应用是一个有前途的候选人。
We report on a giant Rashba type splitting of metallic bands observed in one-dimensional structures prepared on a vicinal silicon substrate. A single layer of Pb on Si(553) orders this vicinal surface making perfectly regular distribution of monatomic steps. Although there is only one layer of Pb, the system reveals very strong metallic and purely one-dimensional character, which manifests itself in multiple surface state bands crossing the Fermi level in the direction parallel to the step edges and a small band gap in the perpendicular direction. As shown by spin-polarized photoemission and density functional theory calculations these surface state bands are spin-polarized and completely decoupled from the rest of the system. The experimentally observed spin splitting of 0.6 eV at room temperature is the largest found to now in the silicon-based metallic nanostructures, which makes the considered system a promising candidate for application in spintronic devices.
影响因子：
8.6
作者：
King, P. D. C.;Hatch, R. C.;Hofmann, Ph.
通讯作者：
Hofmann, Ph.
具有强自旋轨道耦合的原子线之间的费米嵌套
影响因子：
8.6
作者：
C. Tegenkamp;D. Lükermann;H. Pfnür;B. Slomski;G. Landolt;J. H. Dil
通讯作者：
J. H. Dil