Pelliciari, Jonathan Huang, Yaobo Ishii, Kenji Zhang, Chenglin Dai, Pengcheng Chen, Gen Fu Xing, Lingyi Wang, Xiancheng Jin, Changqing Ding, Hong Werner, Philipp Schmitt, Thorsten 2017-08-14 Fe-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. application/pdf https://folia.unifr.ch/global/documents/306082 https://folia.unifr.ch/documents/306082/files/wer_mme.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-017-07286-6 info:eu-repo/semantics/openAccess License undefined Scientific Reports. - 2017, vol. 7, no. 1, p. 8003 info:eu-repo/classification/udc/53 Magnetic moment evolution and spin freezing in doped BaFe 2 As 2 http://purl.org/coar/resource_type/c_6501