Ultrafast antiferromagnet rearrangement in Co/IrMn/CoGd trilayers - Archive ouverte HAL
Article Dans Une Revue Chinese Physics B Année : 2023

Ultrafast antiferromagnet rearrangement in Co/IrMn/CoGd trilayers

Yi Peng
  • Fonction : Auteur
Yong Xu
  • Fonction : Auteur
Weisheng Zhao
  • Fonction : Auteur
Michel Hehn
Boyu Zhang
  • Fonction : Auteur

Résumé

Antiferromagnets offer great potential for high-speed data processing applications, as they can expend spintronic devices from a static storage and gigahertz frequency range to the terahertz range. However, their zero net magnetization makes them difficult to manipulate and detect. In recent years, there has been a lot of attention given to the ultrafast manipulation of magnetic order using ultra-short single laser pulses, but it remains unknown whether a similar scenario can be observed in antiferromagnets. In this work, we demonstrate the manipulation of antiferromagnets with a single femtosecond laser pulse in perpendicular exchange-biased Co/IrMn/CoGd trilayers. We study the dual exchange bias interlayer interaction in quasi-static conditions and competition in ultrafast antiferromagnet rearrangement. Our results show that, compared to conventional ferromagnetic/antiferromagnetic systems, the IrMn antiferromagnet can be ultrafast and efficiently manipulated by the coupled CoGd ferrimagnetic layer, which paves the way for potential energy-efficient spintronic devices.
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Dates et versions

hal-04370016 , version 1 (12-08-2024)

Identifiants

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Zongxia Guo, Gregory Malinowski, Pierre Vallobra, Yi Peng, Yong Xu, et al.. Ultrafast antiferromagnet rearrangement in Co/IrMn/CoGd trilayers. Chinese Physics B, 2023, 32 (8), pp.087507. ⟨10.1088/1674-1056/acda83⟩. ⟨hal-04370016⟩
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