Low temperature dynamics in iron doped MnSi
Under decreasing temperature, Skyrmions emerge in MnSi from the paramagnetic state via a weak crystallization process, where fluctuating skyrmion textures are observed already above the onset of static order. An open question concerns whether the correlation length and time of these textures is sufficient to support sizable topological Hall contributions. However, the narrow temperature range in which the fluctuating textures are observed in MnSi make direct measurements prohibitively challenging. Under substitutional doping with iron the magnetic ordering temperature of MnSi decreases and the skyrmion lattice is observed across a wider range in temperature. Additionally topological Hall contributions may persist above Tc where isotropic short-range helimagnetic correlations are reported down to low temperatures for iron concentrations above x*~0.11. These correlations vanish above xc ~0.17. A comprehensive study on the dynamic and topological properties in this regime is lacking to date. The energy resolution and large dynamic range of spin-echo spectroscopy makes it a uniquely suitable tool to study the dynamics in these samples.
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The recommended format for citing this dataset in a research publication is in the following format:
Johanna K. Jochum; BAUER Andreas; FARAGO Bela and PFLEIDERER Christian. (2023). Low temperature dynamics in iron doped MnSi. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-03-1761
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