| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Gueckstock, Oliver
Freie Universität Berlin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2023Emission of coherent THz magnons in an antiferromagnetic insulator triggered by ultrafast spin–phonon interactions
- 2023Emission of coherent THz magnons in an antiferromagnetic insulator triggered by ultrafast spin–phonon interactionscitations
- 2023Emission of coherent THz magnons in an antiferromagnetic insulator triggered by ultrafast spin–phonon interactionscitations
- 2022Spin-voltage-driven efficient terahertz spin currents from the magnetic Weyl semimetals Co2MnGa and Co2MnAl
- 2022Impact of gigahertz and terahertz transport regimes on spin propagation and conversion in the antiferromagnet IrMn
- 2022Impact of gigahertz and terahertz transport regimes on spin propagation and conversion in the antiferromagnet IrMncitations
- 2022Laser-induced terahertz spin transport in magnetic nanostructures arises from the same force as ultrafast demagnetization
- 2022Transition of laser-induced terahertz spin currents from torque- to conduction-electron-mediated transport
- 2022Transition of laser-induced terahertz spin currents from torque- to conduction-electron-mediated transportcitations
- 2021Ultrafast photocurrents in MoSe2 probed by terahertz spectroscopy
Places of action
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article
Impact of gigahertz and terahertz transport regimes on spin propagation and conversion in the antiferromagnet IrMn
Abstract
<jats:p>Control over spin transport in antiferromagnetic systems is essential for future spintronic applications with operational speeds extending to ultrafast time scales. Here, we study the transition from the gigahertz (GHz) to terahertz (THz) regime of spin transport and spin-to-charge current conversion (S2C) in the prototypical antiferromagnet IrMn by employing spin pumping and THz spectroscopy techniques. We reveal a factor of 4 shorter characteristic propagation lengths of the spin current at THz frequencies (∼0.5 nm) as compared to GHz experiments (∼2 nm). This observation may be attributed to different transport regimes. The conclusion is supported by extraction of sub-picosecond temporal dynamics of the THz spin current. We identify no relevant impact of the magnetic order parameter on S2C signals and no scalable magnonic transport in THz experiments. A significant role of the S2C originating from interfaces between IrMn and magnetic or non-magnetic metals is observed, which is much more pronounced in the THz regime and opens the door for optimization of the spin control at ultrafast time scales.</jats:p>