Electric field tailored magnetic properties of the perovskite-type oxide heterostructures are important in spintronic devices with low energy consumption and small size. Here, the electric field modulated magnetic properties of underoxidized SrRuO₃ (SRO)/SrTiO₃ (STO) heterostructures are investigated using first-principles calculations. The spin polarization of underoxidized SRO/STO heterostructures turns from negative to positive as the electric field changes from −0.2 to 0.2 V nm⁻¹. The underoxidized SRO/STO heterostructure with 7 SRO atomic layers turns from perpendicular magnetic anisotropy to in-plane magnetic anisotropy as the electric field turns from −0.2 to 0.2 V nm⁻¹, which can be attributed to the in-plane d_x²–y² and out-of-plane d_xz, d_yz orbitals. The Dzyaloshinskii–Moriya interaction of underoxidized SRO/STO heterostructures can also be effectively tailored using an electric field. These results indicate that the use of electric field is an effective method to modulate magnetic properties of perovskite-type oxide heterostructures, which is beneficial for the development of the high-performance spintronic devices.

中文翻译：

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电场诱导的过氧化SrRuO3 / SrTiO3异质结构中的自旋极化，磁各向异性和定制的Dzyaloshinskii-Moriya相互作用的逆转

钙钛矿型氧化物异质结构的电场定制磁性能在低能耗，小尺寸的自旋电子器件中很重要。在这里，使用第一性原理计算研究了欠氧化SrRuO ₃（SRO）/ SrTiO ₃（STO）异质结构的电场调制磁性能。随着电场从-0.2变为0.2 V nm ^-1，欠氧化SRO / STO异质结构的自旋极化从负变为正。随着电场从-0.2变为0.2 V nm ^-1，具有7个SRO原子层的欠氧化SRO / STO异质结构从垂直磁各向异性变为面内磁各向异性，这可以归因于面内d _{x² – y ²}和平面外d _xz，d _yz轨道。欠氧化的SRO / STO异质结构的Dzyaloshinskii-Moriya相互作用也可以使用电场有效地调整。这些结果表明，电场的使用是调节钙钛矿型氧化物异质结构的磁性能的有效方法，这对高性能自旋电子器件的发展是有益的。