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首页> 外文期刊>Physical review.B.Condensed matter and materials physics >Perovskite oxide heterojunction for Rashba-Dresselhaus assisted antiferromagnetic spintronics
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Perovskite oxide heterojunction for Rashba-Dresselhaus assisted antiferromagnetic spintronics

机译：Rashba-Tresselhaus辅助反铁磁纺丝素的钙钛矿氧化物异质结

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摘要

A major impediment towards realizing technologies hased on the emerging principles of antiferromagnetic spintronics is the shortage of suitable materials. In this paper, we propose a design of polar|nonpolar helerostruc-tures of perovskite oxides, where a single unit cell of SrIrO_3 is sandwiched between a thin film of LaAlO_3 and a substrate of SrTiO_3. Our calculations within the framework of density-functional theory + Hubbard U + spin-orbit coupling reveal a two-dimensional conducting layer with electron and hole pockets at the interface, exhibiting a strong anisotropic Rashba-Dresselhaus effect along with noncollinear antiferromagnetism, indicating the possibility of realizing a spin-orbit torque. An insightful physical model for the anisotropic Rashba-Dresselhaus effect nicely interprets our results, providing an estimate for the Rashba-Dresselhaus coefficients and illustrating pseudospin orientation. We also observe a proximity-induced prominent Rashba-like effect for Ti 3d empty bands. Our results suggest that the heterostructure may possess the essential ingredients for antiferromagnetic spintronics. deserving experimental verification.
机译：实现了对抗铁磁性闪贷型新兴原理技术的主要障碍是合适材料的短缺。在本文中，我们提出了钙钛矿氧化物的极性黑晕特性设计，其中SRIRO_3的单个单元电池夹在Laalo_3的薄膜和SrtiO_3的基材之间。我们在密度函数理论框架内的计算+ Hubbard U +旋转轨道耦合揭示了界面处的电子和孔袋的二维导电层，具有强烈的各向异性Rashba-Tradeelhaus效果以及非可折叠反铁磁性，表明可能性实现旋转轨道扭矩。各向异性Rashba-Tresselhaus效果的富有洞察力的物理模型很好地解释了我们的结果，提供了Rashba-Tresselhaus系数的估计并说明了伪旋流方向。我们还观察到TI 3D空频段的接近引起的突出的Rashba样效果。我们的研究结果表明，异质结构可具有防冻纺丝熔氮的基本成分。值得实验验证。

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    《Physical review.B.Condensed matter and materials physics》 |2020年第21期|214425.1-214425.10|共10页
  • 作者

    Jayita Chakraborty; Nirmal Ganguli;

  • 作者单位

    Department of Physics Indian Institute of Science Education and Research Bhopal Bhauri Bhopal 462066 India Department of Physics Vivekananda Satavarshiki Mahavidyalaya Manikpara Jhargram WB721513 India;

    Department of Physics Indian Institute of Science Education and Research Bhopal Bhauri Bhopal 462066 India;

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