Pelliciari, JonathanHuang, YaoboIshii, KenjiZhang, ChenglinDai, PengchengChen, Gen FuXing, LingyiWang, XianchengJin, ChangqingDing, HongWerner, PhilippSchmitt, Thorsten2017-09-192017-09-192017Pelliciari, Jonathan, Huang, Yaobo, Ishii, Kenji, et al.. "Magnetic moment evolution and spin freezing in doped BaFe2As2." <i>Scientific Reports,</i> 7, (2017) Springer Nature: https://doi.org/10.1038/s41598-017-07286-6.https://hdl.handle.net/1911/97396Fe-K β X-ray emission spectroscopy measurements reveal an asymmetric doping dependence of the magnetic moments μbare in electron- and hole-doped BaFe2As2. At low temperature, μbare is nearly constant in hole-doped samples, whereas it decreases upon electron doping. Increasing temperature substantially enhances μbare in the hole-doped region, which is naturally explained by the theoretically predicted crossover into a spin-frozen state. Our measurements demonstrate the importance of Hund’s-coupling and electronic correlations, especially for hole-doped BaFe2As2, and the inadequacy of a fully localized or fully itinerant description of the 122 family of Fe pnictides.engThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.Journal articleMagnetic_moment_evolutionhttps://doi.org/10.1038/s41598-017-07286-6