论文标题
Mn原子，人造二聚体和链的系统研究（110）
Systematic study of Mn atoms, artificial dimers and chains on superconducting Ta(110)
论文作者
论文摘要
与$ s $波超导体相连的磁化量会产生所谓的Yu-Shiba-Rusinov州的当地界面状态。为了关注将此类ADATOM的链条定制为拓扑超导阶段的最终目标，我们研究了基本的构建块 - 使用扫描隧道显微镜和光谱学和光谱扫描，在清洁超导TA（110）上进行了单个Fe和Mn Adatoms和Mn二聚体。我们对二聚体中的杂交和分裂进行系统研究，以及它们对晶体学方向和原子间间距的依赖，以确定这种新型样品类型的潜在有趣的链几何形状。随后，我们使用自旋分辨扫描隧道光谱研究了这些几何链中的旋转结构以及依赖长度的shiba带结构。将所有结果与先前研究的NB上结构相同的二聚体和链条的属性进行了比较（110），该二聚体和链的表面结构几乎相同，但大约三倍的自旋轨道相互作用。
Magnetic adatoms coupled to an $s$-wave superconductor give rise to local bound states, so-called Yu-Shiba-Rusinov states. Focusing on the ultimate goal of tailoring chains of such adatoms into a topologically superconducting phase, we investigate basic building blocks - single Fe and Mn adatoms and Mn dimers on clean superconducting Ta(110) - using scanning tunneling microscopy and spectroscopy. We perform a systematic study of the hybridizations and splittings in dimers, and their dependence on the crystallographic directions and interatomic spacings, in order to identify potentially interesting chain geometries for this novel sample type. Subsequently, we study the spin structure as well as the length dependent Shiba band structure in Mn chains of those geometries using spin-resolved scanning tunneling spectroscopy. All results are compared to the according properties of structurally identical dimers and chains on the previously studied Nb(110), which has almost identical surface structure and electronic properties, but an about three times smaller spin-orbit interaction.
