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Present and future trends in spin ARPES
EPL ( IF 1.8 ) Pub Date : 2021-08-09 , DOI: 10.1209/0295-5075/ac0c87
Chiu-Yun Lin , Luca Moreschini , Alessandra Lanzara

Spin-orbit (SO) coupling combined with space inversion symmetry breaking is at the origin of the lifting of the spin degeneracy in the band structure of many materials. The momentum-dependent energy splitting and the degree of spin polarization are indicative of the strength and symmetry of the SO interaction, and enter in the figure of merit of essentially all conceptual designs aiming to control the electron spin degree of freedom in solids. Here we briefly review the role played by spin-and-angle–resolved photoemission (spin ARPES or SARPES) in revealing the spin polarization specifically in the topological states of 3-dimensional (3D) topological insulators (TIs), and we discuss how the progress in the technique can assist the rise of several active fields like spintronics, spin-orbitronics or the generation of spin-polarized beams.



中文翻译:

自旋 ARPES 的现状和未来趋势

自旋轨道 (SO) 耦合与空间反转对称性破坏相结合是许多材料能带结构中自旋简并性提升的起源。与动量相关的能量分裂和自旋极化程度表示 SO 相互作用的强度和对称性,并进入基本上所有旨在控制固体中电子自旋自由度的概念设计的品质因数。在这里,我们简要回顾了自旋和角度分辨光电子发射(自旋 ARPES 或 SARPES)在揭示自旋极化方面的作用,特别是在 3 维(3D)拓扑绝缘体(TI)的拓扑状态中,我们讨论了该技术的进步可以促进几个有源领域的兴起,如自旋电子学、自旋轨道电子学或自旋极化光束的产生。

更新日期:2021-08-09
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