Superconductivity by transition metal doping in Ca$_{10}$(Fe$_{1-x}$M$_x$As)$_{10}$(Pt$_3$As$_8$) (M = Co, Ni, Cu)

Tobias Stürzer; Fabian Kessler; Dirk Johrendt

doi:10.1080/14786435.2014.966796

paper

Superconductivity by transition metal doping in Ca $_{10}$ (Fe $_{1 - x}$ M $_{x}$ As) $_{10}$ (Pt $_{3}$ As $_{8}$ ) (M = Co, Ni, Cu)

arXiv:1407.3100 · doi:10.1080/14786435.2014.966796

Abstract

We report the successful substitution of cobalt, nickel, and copper for iron in the 1038 phase parent compound Ca $_{10}$ (FeAs) $_{10}$ (Pt $_{3}$ As $_{8}$ ) yielding Ca $_{10}$ (Fe $_{1 - x}$ Co $_{x}$ As) $_{10}$ (Pt $_{3}$ As $_{8}$ ), Ca $_{10}$ (Fe $_{1 - x}$ Ni $_{x}$ As) $_{10}$ (Pt $_{3}$ As $_{8}$ ), and Ca $_{10}$ (Fe $_{1 - x}$ Cu $_{x}$ As) $_{10}$ (Pt $_{3}$ As $_{8}$ ), respectively. Superconductivity is induced in Co and Ni doped compounds reaching critical temperatures up to 15 K, similar to known Pt substituted Ca $_{10}$ (Fe $_{1 - x}$ Pt $_{x}$ As) $_{10}$ (Pt $_{3}$ As $_{8}$ ), whereas no superconductivity was detected in Ca $_{10}$ (Fe $_{1 - x}$ Cu $_{x}$ As) $_{10}$ (Pt $_{3}$ As $_{8}$ ). The obtained Tc(x) phase diagrams are very similar to those of other iron arsenide superconductors indicating rather universal behavior despite the more complex structures of the 1038-type compounds, where the physics is primarily determined by the FeAs layer.

7 pages, 6 Figures

References in corpus (15)

Cited by in corpus (1)

Superconducting properties and pseudogap from preformed Cooper pairs in the triclinic (CaFe $_{1 - x}$ Pt $_{x}$ As) $_{10}$ Pt $_{3}$ As $_{8}$

Superconductivity by transition metal doping in Ca10​(Fe1−x​Mx​As)10​(Pt3​As8​) (M = Co, Ni, Cu)

Abstract

References in corpus (15)

Cited by in corpus (1)

Superconductivity by transition metal doping in Ca $_{10}$ (Fe $_{1 - x}$ M $_{x}$ As) $_{10}$ (Pt $_{3}$ As $_{8}$ ) (M = Co, Ni, Cu)