Journal Article

FZJ-2024-00559

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Oxide layer dependent orbital torque efficiency in ferromagnet/Cu/oxide heterostructures

Kim, J. (Corresponding author) ; Uzuhashi, J. ; Horio, M. ; Senoo, T. ; Go, D.FZJ* ; Jo, D. -. ; Sumi, T. ; Wada, T. ; Matsuda, I. ; Ohkubo, T. ; Mitani, S. ; Lee, H.-W. ; Otani, Y.

2023
APS College Park, MD

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Please use a persistent id in citations: doi:10.1103/PhysRevMaterials.7.L111401  doi:10.34734/FZJ-2024-00559

Abstract: The utilization of orbital transport provides a versatile and efficient spin manipulation mechanism. As interest in orbital-mediated spin manipulation grows, we face a new issue to identify the underlying physics that determines the efficiency of orbital torque (OT). In this study, we systematically investigate the variation of OT governed by orbital Rashba-Edelstein effect at the Cu/oxide interface, as we change the oxide material. We find that OT varies by a factor of ∼2, depending on the oxide. Our results suggest that the active electronic interatomic interaction (hopping) between Cu and the oxygen atom is critical in determining OT. This also gives us an idea of what type of material factors is critical in forming a chiral orbital Rashba texture at the Cu/oxide interface.

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Contributing Institute(s):

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

Research Program(s):

1. 5211 - Topological Matter (POF4-521) (POF4-521)
2. DFG project 437337265 - Spin+AFM-Dynamik: Antiferromagnetismus durch Drehimpulsströme und Gitterdynamik (A11) (437337265) (437337265)
3. DFG project 444844585 - Statische und dynamische Kopplung von Gitter- und elektronischen Freiheitsgraden in magnetisch geordneten Übergangsmetalldichalkogenieden (B06) (444844585) (444844585)

Appears in the scientific report 2023

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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