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2015 | 127 | 3 | 799-802
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Multi-Band Calculations on the Upper Critical Fields of Iron Pnictide Superconductor Ba(Fe_{1-x}Ni_x)_2As_2 (x=0.072)

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Based on two-band Ginzburg-Landau theory, we study the upper critical fields for the overdoped composition of the iron-based superconductor Ba(Fe_{1-x}Ni_x)_2As_2 with x=0.072. All the temperature and angular results of this compound are consistent with the experimental data. Thus our analysis strongly suggests that Ba(Fe_{1-x}Ni_x)_2As_2 in the overdoped regime is a two-gap superconductor.
  • Department of Mathematics and Physics, North China Electric Power University, Beijing 102206, China
  • State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871, China
  • Department of Mathematics and Physics, North China Electric Power University, Beijing 102206, China
  • Department of Mathematics and Physics, North China Electric Power University, Beijing 102206, China
  • Department of Mathematics and Physics, North China Electric Power University, Beijing 102206, China
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