Journal Article

PUBDB-2022-01297

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spin-structured multilayer THz emitters by oblique incidence deposition

Kueny, E.CFEL* ; Calendron, A.-L. (Corresponding author)CFEL*DESY* ; Velten, S.DESY* ; Bocklage, L.XFEL.EU*DESY* ; Kärtner, F.CFEL*XFEL.EU*DESY* ; Roehlsberger, R.Extern*XFEL.EU*DESY*

2023
American Inst. of Physics Melville, NY

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Please use a persistent id in citations: doi:10.1063/5.0128437  doi:10.3204/PUBDB-2022-01297

Abstract: State-of-the-art THz spintronic emitters require a constant magnetic field to saturate their magnetization. We demonstrate that depositing the ferromagnetic layers at oblique incidence confines the magnetization to a chosen in-plane easy axis and maintains the saturation in the absence of an external magnetic field. We use this method to build THz emitters structured as spin valves, for which we use an external magnetic field to turn on and off the emission of THz radiation as well as to change its polarization. We are able to reproduce the THz waveforms by modeling the spin current and the THz propagation through the multilayer system.

Note: Grant from Helmholtz: P303.

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Contributing Institute(s):

1. FS-CFEL-2 (CFEL-UFOX)
2. FS-Photon Science (FS-PS)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. DFG project 390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)
3. DFG project 194651731 - EXC 1074: Hamburger Zentrum für ultraschnelle Beobachtung (CUI): Struktur, Dynamik und Kontrolle von Materie auf atomarer Skala (194651731) (194651731)

Experiment(s):

1. Experiments at CFEL

Appears in the scientific report 2023

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; PubMed Central ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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