Multigap superconductivity in pnictides

ORAL

Abstract

Point-contact Andreev reflection studies of the superconducting energy gap on the NdFeAsOF, (Ba,K)Fe$_{2}$As$_{2}$ and Ba(Fe,Co)$_{2}$As$_{2}$ crystals will be presented. The analysis of the data points to a two-gap superconductivity in these materials. Possible existence of the pseudogap in the non-superconducting density of states related to the static or dynamic magnetic order will be discussed as well.

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Authors

  • Peter Samuely

    Centre of Low Temperature Physics Kosice

  • Pavol Szabo

    Centre of Low Temperature Physics Kosice

  • Zuzana Pribulova

    Centre of Low Temperature Physics Kosice

  • Gabriel Pristas

    Centre of Low Temperature Physics Kosice

  • P.C. Canfield

    Ames Laboratory and Department of Physics and Astronomy, Iowa State Univeristy, Ames, Iowa 50011, Ames Laboratory and Iowa State University, Ames Laboratory and Physics Department and Astronomy, Iowa State University, Ames, IA, Ames Laboratory, Ames Laboratory, US DOE and Iowa State University, Ames Laboratory/Department of Physics and Astronomy, Ames Lab / Iowa State University, Ames Laboratory/Iowa State University

  • S.L. Bud'ko

    Ames Laboratory and Iowa State University, Ames Laboratory and Physics Department and Astronomy, Iowa State University, Ames, IA, Ames Laboratory, Ames Laboratory, US DOE and Iowa State University, Ames Laboratory/Iowa State University, Ames Laboratory/Department of Physics and Astronomy, Ames laboratory