论文标题
氧化物二维电子气中的自旋和轨道Edelstein效应：理论和应用于Alo $ _x $/srtio $ _ {3} $
Spin and orbital Edelstein effect in an oxide two-dimensional electron gas: theory and application to AlO$_x$/SrTiO$_{3}$
论文作者
论文摘要
Edelstein效应提供了主要的非磁性材料中均匀磁化的纯电产生和控制，其反转对称性。通常，仅讨论对外部电场的自旋密度响应。在这里，我们报告了在Srtio $ _3 $和ALO之间的界面上的拓扑氧化物二维电子气体中包含自旋和轨道贡献的电诱导的磁化强度。我们发现，在这个特定的系统中，轨道Edelstein效应超过了旋转的Edelstein效应一个以上的数量级。主要原因是在类似Rashba的阶带对中具有不同大小的轨道矩。
The Edelstein effect provides the purely electrical generation and control of a homogeneous magnetization in primarily nonmagnetic materials with broken inversion symmetry. Usually, only the spin density response to an external electric field is discussed. Here, we report on the electrically induced magnetization containing spin as well as orbital contributions in the topological oxide two-dimensional electron gas at the interface between SrTiO$_3$ and AlO. We find that in this particular system the orbital Edelstein effect exceeds the spin Edelstein effect by more than one order of magnitude. The main reason are orbital moments of different magnitude in the Rashba-like-split band pairs.
