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- W3100470215 endingPage "075004" @default.
- W3100470215 startingPage "075004" @default.
- W3100470215 abstract "We study the diamagnetism induced by thermal fluctuations above the superconducting transition of the iron pnictide Ba(Fe$_{1-x}$Ni$_x$)$_2$As$_2$ with different doping levels. The measurements are performed with magnetic fields up to 7 T applied in the two main crystal directions. These data provide double information: first, they confirm at a quantitative level the applicability to these materials of a 3D-anisotropic Ginzburg-Landau approach valid in the finite field regime. Then, they allow to determine the doping-level dependence of the in-plane coherence length and of the superconducting anisotropy factor, $gamma$. Our results provide a stringent confirmation of the large increase of $gamma$ with the doping level, as recently proposed from magnetoresistivity measurements. The implications of the applicability of the model used to a multiband superconductor are discussed." @default.
- W3100470215 created "2020-11-23" @default.
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- W3100470215 date "2015-05-18" @default.
- W3100470215 modified "2023-10-16" @default.
- W3100470215 title "Large increase of the anisotropy factor in the overdoped region of Ba(Fe<sub>1-x</sub>Ni<sub>x</sub>)<sub>2</sub>As<sub>2</sub>as probed by fluctuation spectroscopy" @default.
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- W3100470215 doi "https://doi.org/10.1088/0953-2048/28/7/075004" @default.
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