Journal Article

FZJ-2024-03086

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Topology-Engineered Orbital Hall Effect in Two-Dimensional Ferromagnets

Chen, Z. ; Li, R. ; Bai, Y. ; Mao, N. ; Zeer, M.FZJ* ; Go, D.FZJ* ; Dai, Y. (Corresponding author) ; Huang, B. ; Mokrousov, Y.FZJ* ; Niu, C. (Corresponding author)

2024
ACS Publ. Washington, DC

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Please use a persistent id in citations: doi:10.1021/acs.nanolett.3c05129  doi:10.34734/FZJ-2024-03086

Abstract: 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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Contributing Institute(s):

1. Quanten-Theorie der Materialien (PGI-1)

Research Program(s):

1. 5211 - Topological Matter (POF4-521) (POF4-521)
2. DFG project 444844585 - Statische und dynamische Kopplung von Gitter- und elektronischen Freiheitsgraden in magnetisch geordneten Übergangsmetalldichalkogenieden (B06) (444844585) (444844585)
3. DFG project 448880005 - Ab-Initio Entdeckung topologischer magnetischer Hochtemperaturmaterialien (448880005) (448880005)

Appears in the scientific report 2024

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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