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- W3091890458 abstract "Magnetic skyrmions are topologically protected spin structures, offering great promise as information carriers for future spintronic devices. However, a series of challenges, such as unreliable skyrmion motion, pinning effects, and a weak readout signal, prevent the development of skyrmionic applications. The recently demonstrated capability to engineer the local exchange-bias field (LEBF) in an exchange-biased composite, provides solutions to these challenges. By exploiting LEBF, we design and analyze a robust skyrmion shift device. LEBF-induced magnetic domain walls form the boundary of the device channel, and LEBF potential wells are implemented in the channel for positioning skyrmions. Based on simulations with comprehensive models, we demonstrate the proposed device has the advantages of (i) localizing the skyrmions in the absence of current, (ii) suppressing skyrmion annihilation during transport, (iii) promoting steady skyrmion motion, (iv) enhancing the skyrmion velocity, and (v) magnifying the readout signal. Our results form the basis for the design of robust skyrmion devices through LEBF engineering." @default.
- W3091890458 created "2020-10-15" @default.
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- W3091890458 date "2020-10-06" @default.
- W3091890458 modified "2023-10-15" @default.
- W3091890458 title "Robust Skyrmion Shift Device Through Engineering the Local Exchange-Bias Field" @default.
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- W3091890458 doi "https://doi.org/10.1103/physrevapplied.14.044008" @default.
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