之字形的
凝聚态物理
自旋电子学
磁性
反铁磁性
材料科学
铁磁性
联轴节(管道)
自旋轨道相互作用
自旋(空气动力学)
拉希巴效应
物理
几何学
数学
热力学
冶金
作者
Ivan Naumov,Pratibha Dev
出处
期刊:Physical Review Materials
[American Physical Society]
日期:2023-02-22
卷期号:7 (2)
被引量:1
标识
DOI:10.1103/physrevmaterials.7.026204
摘要
Discoveries of low-dimensional quantum materials have renewed interest in some of the fundamental phenomena, such as magnetism and Rashba-type spin orbit coupling. In particular, exploring these phenomena by themselves and/or in combination within one-dimensional (1D) systems is of interest for fields as disparate as spintronics and biology. For example, a better understanding of Rashba-type spin orbit coupling in 1D systems may be used to explain spin-selective electron transport in long helical molecules. In this paper, using first principle calculations, we show that each edge of a zigzag nanoribbon composed of a bismuth (Bi) bilayer is a truly 1D structure that naturally combines both 1D magnetism and Rashba-type spin orbit coupling in a single system. In particular, we study the combined effects of exchange and spin-orbit coupling in nanoribbons that are: (i) ideal freestanding, (ii) placed on a hexagonal boron nitride substrate, and (iii) decorated with N atoms. The edges of the Bi zigzag NRs can display ferromagnetic, antiferromagnetic, or noncollinear ordering, resulting in a broken quantum spin Hall state. The interplay of Rashba and exchange effects in different magnetic phases can result in different spin-dependent transport regimes.
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