论文标题
ktao $ _ \ text {3} $（001）表面的rashba般的自旋轨道互动和自旋纹理从DFT计算
Rashba-like spin-orbit interaction and spin texture at the KTaO$_\text{3}$ (001) surface from DFT calculations
论文作者
论文摘要
在氧化物旋转剂和自旋能力方面的背景下，氧化物异质结构的Rashba样旋转轨道相互作用是备受追捧的特征。 KTAO $ _3 $（KTO）是用于该目的的最佳基材之一，这是由于其强大的旋转轨道交互和沿（001）方向的$+1 | -1 $+1 | -1 $带电的层。在密度功能理论（DFT）内采用第一原则计算，并提出了一个可能的静电模型，以转移到KTO板的表面，我们全面分析了Rashba样旋转轨道的相互作用，借助于三维式胸腔分散，iSOONERGETIC COLTION，ISOOENERGETIC COLTURS，并从我们的dy thin thin thum-$ - $ - $ - $ - $ - $ - $ - $ - $ - $ - $ - $ - $ - $ - $ - $ - KTO的平板。我们的结果揭示了相当强的线性Rashba相互作用，没有Dresselhaus的签名或在此处考虑的系统中的Rashba互动的签名。此处提供的严格分析对于氧化物旋转的未来发展可能至关重要。
Rashba-like spin-orbit interaction at oxide heterostructures emerges as a much sought-after feature in the context of oxide spintronics and spin-orbitronics. KTaO$_3$ (KTO) is one of the best substrates available for the purpose, owing to its strong spin-orbit interaction and alternating $+1|-1$ charged layers along the (001) direction. Employing first-principles calculations within density functional theory (DFT) and proposing a possible electrostatic model for charge transfer to the surfaces of KTO slabs, we comprehensively analyze Rashba-like spin-orbit interaction with the help of three-dimensional band dispersion, isoenergetic contours, and projected spin textures $-$ all directly obtained from our DFT results $-$ in a thin insulating slab and a conducting thick slab of KTO. Our results reveal reasonably strong linear Rashba interaction with no signature of Dresselhaus or higher order Rashba interactions in the systems considered here. The rigorous analysis presented here may be crucial for future developments in oxide spintronics.
