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001     878195
005     20210130005453.0
024 7 _ |a 10.1103/PhysRevApplied.13.044079
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100 1 _ |a Rana, K. Gaurav
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245 _ _ |a Room-Temperature Skyrmions at Zero Field in Exchange-Biased Ultrathin Films
260 _ _ |a College Park, Md. [u.a.]
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520 _ _ |a We demonstrate that magnetic skyrmions with a mean diameter around 60 nm can be stabilized at room temperature and zero external magnetic field in an exchange-biased Pt/Co/Ni80Fe20/Ir20Mn80 multilayer stack. This is achieved through an advanced optimization of the multilayer-stack composition in order to balance the different magnetic energies controlling the skyrmion size and stability. Magnetic imaging is performed both with magnetic force microscopy and scanning nitrogen-vacancy magnetometry, the latter providing unambiguous measurements at zero external magnetic field. In such samples, we show that exchange bias provides an immunity of the skyrmion spin texture to moderate external-magnetic-field perturbations, in the tens-of-millitesla range, which is an important feature for applications such as memory devices. These results establish exchange-biased multilayer stacks as a promising platform toward the effective realization of memory and logic devices based on magnetic skyrmions.
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536 _ _ |a DARPA, Phase 2 - Defense Advanced Research Projects Agency Manipulation of magnetic skyrmions for logicin- memory applications (Z1422.01.18)
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536 _ _ |0 G:(EU-Grant)856538
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700 1 _ |a Finco, A.
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700 1 _ |a Fabre, F.
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700 1 _ |a Chouaieb, S.
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700 1 _ |a Haykal, A.
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700 1 _ |a Le Denmat, S.
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700 1 _ |a David, P.
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700 1 _ |a Belmeguenai, M.
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700 1 _ |a Denneulin, T.
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700 1 _ |a Dunin-Borkowski, R. E.
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700 1 _ |a Gaudin, G.
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700 1 _ |a Jacques, V.
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700 1 _ |a Boulle, O.
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773 _ _ |a 10.1103/PhysRevApplied.13.044079
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