Structural and electronic response upon hole doping of rare-earth iron oxyarsenides Nd₁₋ₓSrₓFeAsO (0 < x≤ 0.2)
2009
Kasperkiewicz, Karolina | Bos, Jan-Willem G. | Fitch, Andrew N. | Prassides, Kosmas | Margadonna, Serena
Hole doping of NdFeAsO via partial replacement of Nd³⁺ by Sr²⁺ is a successful route to obtaining superconducting phases (Tc = 13.5 K for a Sr²⁺ content of 20%); however, the structural and electronic response with doping is different from and non-symmetric to that in the electron-doped side of the phase diagram.
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