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- W4281567373 abstract "We propose a new mechanism to produce a meron-antimeron pair in a two dimensional antiferromagnet with an ultrafast laser pulse via thermal Schwinger mechanism. Unlike ultrafast skyrmion nucleation, this process conserves total topological charge. We systematically show different stages of the dynamics and define proper topological invariants to characterise the configurations. The emergent structure can retain its topological structure for up to 100 ps. By introducing a topological structure factor we show that pair formation is robust against any random choice of initial magnetic configuration and can survive against disorder. Our findings demonstrate that the rich world of spin textures, which goes beyond conventional skyrmions, can be reached optically." @default.
- W4281567373 created "2022-05-27" @default.
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- W4281567373 date "2022-05-24" @default.
- W4281567373 modified "2023-10-17" @default.
- W4281567373 title "Ultrafast optical generation of antiferromagnetic meron-antimeron pairs with conservation of topological charge" @default.
- W4281567373 doi "https://doi.org/10.48550/arxiv.2205.12100" @default.
- W4281567373 hasPublicationYear "2022" @default.
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