自旋电子学
拓扑(电路)
拓扑绝缘体
量子反常霍尔效应
物理
霍尔效应
铁磁性
量子霍尔效应
背景(考古学)
角动量
凝聚态物理
量子力学
磁场
工程类
电气工程
古生物学
生物
作者
Zhiqi Chen,Runhan Li,Yingxi Bai,Ning Mao,Mahmoud Zeer,Dongwook Go,Ying Dai,Baibiao Huang,Yuriy Mokrousov,Chengwang Niu
出处
期刊:Nano Letters
[American Chemical Society]
日期:2024-04-15
标识
DOI:10.1021/acs.nanolett.3c05129
摘要
Recent advances in the manipulation of the orbital angular momentum (OAM) within the paradigm of orbitronics presents a promising avenue for the design of future electronic devices. In this context, the recently observed orbital Hall effect (OHE) occupies a special place. Here, focusing on both the second-order topological and quantum anomalous Hall insulators in two-dimensional ferromagnets, we demonstrate that topological phase transitions present an efficient and straightforward way to engineer the OHE, where the OAM distribution can be controlled by the nature of the band inversion. Using first-principles calculations, we identify Janus RuBrCl and three septuple layers of MnBi2Te4 as experimentally feasible examples of the proposed mechanism of OHE engineering by topology. With our work, we open up new possibilities for innovative applications in topological spintronics and orbitronics.
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