论文标题
sriro $ _3 $ - la $ _ {0.7} $ sr $ _ {0.3} $ mno $ _3 $ biLayers
Growth-sequence-dependent interface magnetism of SrIrO$_3$ - La$_{0.7}$Sr$_{0.3}$MnO$_3$ bilayers
论文作者
论文摘要
氧化物3D Ferromagnet la $ _ {0.7} $ sr $ _ {0.3} $ mno $ _ {3} $（lsmo）和5D paramagnet sriro $ _ {3} $ _ {3} $（SIO）对大型自旋（SIO）进行了研究，对策略进行了研究。对于LSMO在SIO上的生长序列，已经观察到与缺乏长达4 T的磁饱和相关的大型面外偏置各向异性的影响。薄的双层膜在SRTIO $ _3 $（001）的两个生长序列中都通过脉冲激光沉积而生长，并且通过扫描透射透射电子显微镜（STEM）和X射线衍射（XRD）的结构表征。磁化和磁场依赖的Mn L $ _ {2,3} $边缘X射线磁性圆形二色性（XMCD）的测量结果揭示了LSMO磁性顺序的变化，这些磁性顺序的变化在SIO的LSMO中很强，在SIO下方的LSMO中很弱。我们将生长序列的影响归因于界面晶格结构/对称性，该结构/对称性会影响界面磁耦合。
Bilayers of the oxide 3d ferromagnet La$_{0.7}$Sr$_{0.3}$MnO$_{3}$ (LSMO) and the 5d paramagnet SrIrO$_{3}$ (SIO) with large spin-orbit coupling (SOC) have been investigated regarding the impact of interfacial SOC on magnetic order. For the growth sequence of LSMO on SIO, ferromagnetism is strongly altered and large out-of-plane-canted anisotropy associated with lacking magnetic saturation up to 4 T has been observed. Thin bilayer films have been grown coherently in both growth sequences on SrTiO$_3$ (001) by pulsed laser deposition and structurally characterized by scanning transmission electron microscopy (STEM) and x-ray diffraction (XRD). Measurements of magnetization and field-dependent Mn L$_{2,3}$ edge x-ray magnetic circular dichroism (XMCD) reveal changes of LSMO magnetic order which are strong in LSMO on SIO and weak in LSMO underneath of SIO. We attribute the impact of the growth sequence to the interfacial lattice structure/symmetry which is known to influence the interfacial magnetic coupling.
