ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2026
Ultrafast Control of Néel Vector in Collinear Antiferromagnet MnPt.
Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Ultrafast Dynamics of Spin Current and Electron Temperature in Spintronic Terahertz Emitters.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Gate-Tunable Floquet Weyl Photon Emission from Topological Dirac Semimetal CdAdvanced materials (Deerfield Beach, Fla.) · 2026Article
- Ultrafast Control of Néel Vector in Collinear Antiferromagnet MnPt.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
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4 authors.
Funding
Abstract
Exchange-bias-coupled spintronic terahertz emitters (EBC-STEs) utilize an antiferromagnet (AFM) as both a passive pinning layer for ferromagnetic spins and a detector of spin currents. Conventionally, terahertz (THz) emission from spintronic terahertz emitters (STEs) is attributed solely to the ferromagnetic subsystem, with the ultrafast magnetization dynamics of AFM considered undetectable due to its zero net magnetic moment. Here, we demonstrate a novel experimental approach to probe and control ultrafast magnetization dynamics driven by laser-induced optical torque on the Néel vector in collinear AFM MnPt. The Néel vector induced transient magnetization is isolated from ferromagnetic magnetization dynamics by detecting the distinct THz emission from the canted magnetic moment, as confirmed in Pt/MnPt bilayers. We further investigate the stability of the EBC-STE compared to conventional STEs under optical excitation. This work provides direct evidence of ultrafast AFM magnetization dynamics in an EBC-STE, transforming it from a passive emitter into a sensitive probe of interfacial ultrafast magnetism and unlocking the potential of antiferromagnetic THz spintronics.
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