Antiferromagnetic spintronics
Antiferromagnetic spintronics
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DOI：
10.1103/revmodphys.90.015005
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发表时间：
2018-02-15
影响因子：
44.1
通讯作者：
Tserkovnyak, Y.
中科院分区：
文献类型：
--
作者：
Baltz, V.;Manchon, A.;Tserkovnyak, Y.
反铁磁材料可以代表自旋电子应用的未来，这要归功于它们结合了许多有趣的特性：它们对磁场引起的扰动具有鲁棒性，不产生杂散场，显示超快动力学，并且能够产生大的磁输运效应。在过去的十年里，人们投入了大量的研究工作来解开反铁磁材料的自旋输运性质。是否可以用自旋输运来驱动反铁磁秩序，以及如何检测随后的变化，是目前正在解决的一些令人兴奋的挑战。反铁磁自旋电子学始于对自旋转移的研究，并在过去几年中，随着在反铁磁中使用自旋轨道相互作用的开创性文章的发表，经历了明确的复兴。这种范式转变为电子学中自旋操纵的全新概念提供了可能性。这些努力的核心是需要预测模型、相关的破坏性材料和新的实验设计。本文综述了基于反铁磁材料的理论和实验分析所描述的最突出的自旋电子效应。它还详细介绍了一些仍然存在的瓶颈，并提出了未来研究的可能途径。本文综述了自旋传递相关的效应，如自旋传递扭矩、自旋穿透长度、畴壁运动和“磁化”动力学，以及自旋轨道相关的现象，如（隧道）各向异性磁阻、自旋霍尔和逆自旋电偶效应。与自旋热电子有关的效应，如自旋塞贝克效应，与反铁磁体中磁振子的输运有关。还讨论了自旋波和自旋超流体在反铁磁体中的传播。
Antiferromagnetic materials could represent the future of spintronic applications thanks to the numerous interesting features they combine: they are robust against perturbation due to magnetic fields, produce no stray fields, display ultrafast dynamics, and are capable of generating large magnetotransport effects. Intense research efforts over the past decade have been invested in unraveling spin transport properties in antiferromagnetic materials. Whether spin transport can be used to drive the antiferromagnetic order and how subsequent variations can be detected are some of the thrilling challenges currently being addressed. Antiferromagnetic spintronics started out with studies on spin transfer and has undergone a definite revival in the last few years with the publication of pioneering articles on the use of spin-orbit interactions in antiferromagnets. This paradigm shift offers possibilities for radically new concepts for spin manipulation in electronics. Central to these endeavors are the need for predictive models, relevant disruptive materials, and new experimental designs. This paper reviews the most prominent spintronic effects described based on theoretical and experimental analysis of antiferromagnetic materials. It also details some of the remaining bottlenecks and suggests possible avenues for future research. This review covers both spin-transfer-related effects, such as spin-transfer torque, spin penetration length, domain-wall motion, and "magnetization" dynamics, and spin-orbit related phenomena, such as (tunnel) anisotropic magnetoresistance, spin Hall, and inverse spin galvanic effects. Effects related to spin caloritronics, such as the spin Seebeck effect, are linked to the transport of magnons in antiferromagnets. The propagation of spin waves and spin superfluids in antiferromagnets is also covered.