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- W1715069834 abstract "We present a muon spin rotation (μSR) study of the magnetic and superconducting properties of single crystals of electron-doped BaFe2−xCoxAs2 with x = 0.08, 0.20 and 0.25 (Tc = 9, 25 and 20 K) and of polycrystalline hole-doped Pr1−xSrxFeAsO with x = 0 and 0.2 (Tc = 15 K). In the former series, we observe some interesting parallels with the electron-doped SmFeAsO1−xFx 1111-type system (Drew et al 2009 Nat. Mater. 8 310). In particular, we obtain evidence that strongly disordered static magnetism coexists with superconductivity on a microscopic scale in underdoped samples and even at optimum doping there is a slowing down (or enhancement) of dynamic magnetic correlations below Tc≈25 K. In contrast, for the hole-doped Pr1−xSrxFeAsO samples we obtain evidence for a mesoscopic phase segregation into regions with nearly unperturbed antiferromagnetic (AF) order and others that are non-magnetic and most likely superconducting. The observed trend resembles the one that was previously reported for hole-doped Ba1−xKxFe2As2 (Aczel et al 2008 Phys. Rev. B 78 214503, Park et al 2009 Phys. Rev. Lett. 102 117006) and thus might be a common property of the hole-doped systems." @default.
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- W1715069834 date "2009-05-19" @default.
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- W1715069834 title "Muon spin rotation study of magnetism and superconductivity in BaFe<sub>2−</sub><i><sub>x</sub></i>Co<i><sub>x</sub></i>As<sub>2</sub>and Pr<sub>1−</sub><i><sub>x</sub></i>Sr<i><sub>x</sub></i>FeAsO" @default.
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- W1715069834 doi "https://doi.org/10.1088/1367-2630/11/5/055050" @default.
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