Spin and spin current—From fundamentals to recent progress
Spin and spin current—From fundamentals to recent progress
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DOI：
10.1063/5.0133335
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发表时间：
2022-11
影响因子：
3.2
通讯作者：
S. Maekawa;T. Kikkawa;H. Chudo;J. Ieda;E. Saitoh
中科院分区：
文献类型：
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作者：
S. Maekawa;T. Kikkawa;H. Chudo;J. Ieda;E. Saitoh
沿着自旋科学和自旋电子学研究的进展，电子自旋的流动，即，自旋电流引起了人们的兴趣。用自旋流的概念解释了新的现象和电子态。此外，由于许多传统上已知的自旋电子学现象变得很好地组织基于自旋电流，它已迅速被认为是一个重要的概念，在广泛的凝聚态物理。在本文中，我们重点关注自旋、自旋流及其相关现象物理学的最新发展，其中自旋角动量与不同形式的角动量之间的转换起着至关重要的作用。本文首先介绍了自旋电流的概念，然后讨论了自旋交换耦合驱动的自旋电子现象的最新进展：自旋泵、拓扑霍尔矩和涌现电感。然后，我们将我们的讨论扩展到自旋与热，晶格振动和电荷电流的相互作用/相互转换，并解决自旋Seebeck和Peltier效应的最新进展和前景。其次，我们回顾了机械运动和电子/核自旋之间的相互作用，并讨论了巴内特场和旋转多普勒效应之间的区别。我们表明，巴内特效应揭示了角动量补偿温度，在该温度下，亚铁磁体的净角动量被淬灭。
Along with the progress of spin science and spintronics research, the flow of electron spins, i.e., spin current, has attracted interest. New phenomena and electronic states were explained in succession using the concept of spin current. Moreover, as many of the conventionally known spintronics phenomena became well organized based on spin current, it has rapidly been recognized as an essential concept in a wide range of condensed matter physics. In this article, we focus on recent developments in the physics of spin, spin current, and their related phenomena, where the conversion between spin angular momentum and different forms of angular momentum plays an essential role. Starting with an introduction to spin current, we first discuss the recent progress in spintronic phenomena driven by spin-exchange coupling: spin pumping, topological Hall torque, and emergent inductor. We, then, extend our discussion to the interaction/interconversion of spins with heat, lattice vibrations, and charge current and address recent progress and perspectives on the spin Seebeck and Peltier effects. Next, we review the interaction between mechanical motion and electron/nuclear spins and argue the difference between the Barnett field and rotational Doppler effect. We show that the Barnett effect reveals the angular momentum compensation temperature, at which the net angular momentum is quenched in ferrimagnets.