Journal Article

FZJ-2024-02101

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Current-induced magnetization switching in a magnetic topological insulator heterostructure

Zimmermann, E.FZJ* ; Teller, J.FZJ* ; Schleenvoigt, M.FZJ* ; Behner, G.FZJ* ; Schüffelgen, P.FZJ* ; Lüth, H.FZJ* ; Grützmacher, D.FZJ* ; Schäpers, T. (Corresponding author)FZJ*

2024
APS College Park, MD

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Please use a persistent id in citations: doi:10.1103/PhysRevMaterials.8.026201  doi:10.34734/FZJ-2024-02101

Abstract: We present the current-induced switching of the internal magnetization direction in a magnetic topologicalinsulator/topological insulator heterostructure in the quantum anomalous Hall regime. The switching process isbased on the bias current dependence of the coercive field, which is attributed to either Joule heating or the effectof the spin transfer provided by the unpolarized bias current. Increasing the bias current leads to a decrease in themagnetic order in the sample. When the applied current is subsequently reduced, the magnetic moments alignwith an externally applied magnetic field, resulting in repolarization in the opposite direction. This includes areversal of the spin polarization and hence a reversal of the chiral edge mode. Possible applications in spintronicdevices are discussed.

Keyword(s): Information and Communication (1st) ; Condensed Matter Physics (2nd)

Note: Funding: Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy – Cluster of Excellence Matter and Light for Quantum Computing (ML4Q) EXC 2004/1 – 390534769German Federal Ministry of Education and Research (BMBF) via the Quantum Futur project “MajoranaChips” (Grant No. 13N15264) within the funding program Photonic Research GermanyQuantERA grant MAGMA via the Deutsche Forschungsgemeinschaft under (Grant No. 491798118).

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Contributing Institute(s):

1. Halbleiter-Nanoelektronik (PGI-9)

Research Program(s):

1. 5222 - Exploratory Qubits (POF4-522) (POF4-522)

Appears in the scientific report 2024

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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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