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- W2891075622 abstract "Spintronics is a research field that aims to understand and control spins on the nanoscale and should enable next-generation data storage and manipulation. One technological and scientific key challenge is to stabilize small spin textures and to move them efficiently with high velocities. For a long time, research focused on ferromagnetic materials, but ferromagnets show fundamental limits for speed and size. Here, we circumvent these limits using compensated ferrimagnets. Using ferrimagnetic Pt/Gd44Co56/TaOx films with a sizeable Dzyaloshinskii-Moriya interaction, we realize a current-driven domain wall motion with a speed of 1.3 km s-1 near the angular momentum compensation temperature (TA) and room-temperature-stable skyrmions with minimum diameters close to 10 nm near the magnetic compensation temperature (TM). Both the size and dynamics of the ferrimagnet are in excellent agreement with a simplified effective ferromagnet theory. Our work shows that high-speed, high-density spintronics devices based on current-driven spin textures can be realized using materials in which TA and TM are close together." @default.
- W2891075622 created "2018-09-27" @default.
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- W2891075622 date "2018-09-17" @default.
- W2891075622 modified "2023-10-11" @default.
- W2891075622 title "Fast current-driven domain walls and small skyrmions in a compensated ferrimagnet" @default.
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- W2891075622 doi "https://doi.org/10.1038/s41565-018-0255-3" @default.
- W2891075622 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30224795" @default.
- W2891075622 hasPublicationYear "2018" @default.
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