Evidence for surface spin structures from first order reversal curves in Co<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si96.svg" display="inline" id="d1e456"><mml:msub><mml:mrow /><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:math>Sn<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si97.svg" display="inline" id="d1e464"><mml:msub><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>S<mml:math xmlns:mml="http://www.w3.org/1998/…

نویسندگان

چکیده

We study magnetization reversal and first order curves for two different magnetic topological semimetals, Co3Sn2S2 Fe3GeTe2, in a wide temperature range. For the reversal, we observe strong dependence of initial (low-temperature) step-like switchings, so inverted hysteresis appears at high temperatures. Usually, is fingerprint material with independent phases, inversion reflects phase interaction. First curve analysis confirms two-phase behavior even lowest temperatures experiment. While bulk ferromagnetic shows dependence, one observed phases demonstrates perfect stability below Curie temperature. The obtained loops are bow-tie type, which usually ascribed to appearance skyrmionic phase. described mostly identical Fe3GeTe2 only characteristic differ these materials. specifics our experiment excellent second phase, while skyrmions near On other hand, can be expected surface-state induced spin textures due protection surface states semimetals. This also explains universal semimetals FGT. Both materials have strongly properties, similarity presence states. Thus, ascribe second, temperature-stable

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ژورنال

عنوان ژورنال: Journal of Magnetism and Magnetic Materials

سال: 2023

ISSN: ['0304-8853', '1873-4766']

DOI: https://doi.org/10.1016/j.jmmm.2023.170668