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Magnetic moment evolution and spin freezing in doped BaFe 2 As 2

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

In: Scientific Reports, 2017, vol. 7, no. 1, p. 8003

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...