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Emergent perpendicular magnetic anisotropy at the interface of an oxide heterostructure
Physical Review B ( IF 3.2 ) Pub Date : 2021-09-28 , DOI: 10.1103/physrevb.104.115162
Chuangye Song 1, 2 , Xuanyi Li 2, 3 , Lvkang Shen 4 , Baoshan Cui 1, 2 , Xing Xu 1 , Guoqiang Yu 1, 2, 3 , Ming Liu 4 , Sheng Meng 1, 2, 3 , Kehui Wu 1, 2, 3
Affiliation  

Controlling the magnetic anisotropy in magnetic oxides is critical for the development of oxide spintronics. Here we report on the finding of an emergent interfacial magnetism, with unique perpendicular magnetic anisotropy (PMA), at the interface of a half-doped manganite La1/2Sr1/2MnO3 film on LaAlO3 substrate, through combined electron spin resonance measurements and density functional theory calculations. The interfacial magnetism can be explained by the 3d3z2r2 orbital-mediated ferromagnetic exchange interaction between Mn ions near the interface, which is enhanced by the compressive strain from the substrate. Our results provide a useful PMA system for possible spintronic applications, as well as atomistic-level insight to the magnetic anisotropy in strained manganite oxide interfaces.

中文翻译:

氧化物异质结构界面处的突现垂直磁各向异性

控制磁性氧化物的磁各向异性对于氧化物自旋电子学的发展至关重要。在这里,我们报告了在半掺杂锰矿的界面处发现具有独特垂直磁各向异性 (PMA) 的突现界面磁性1/21/23 拍电影 拉尔3通过结合电子自旋共振测量和密度泛函理论计算。界面磁性可以解释为3d3z2-r2界面附近 Mn 离子之间的轨道介导的铁磁交换相互作用,通过来自基板的压缩应变而增强。我们的结果为可能的自旋电子应用提供了一个有用的 PMA 系统,以及对应变锰氧化物界面中磁各向异性的原子级洞察力。
更新日期:2021-09-28
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