Cleavage behavior and surface states in iron pnictides

ORAL

Abstract

We present a density functional study of the surface electronic structure and the cleavage behavior of LiFeAs and Co-doped BaFe$_{2}$As$_{2}$. The results are discussed together with angle resolved photo emission (ARPES) and low energy electron diffraction (LEED) data. The two systems behave rather differently and we conclude that LiFeAs will be the ideal system for surface sensitive probes among the iron pnictide familly.

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Authors

  • Klaus Koepernik

    • IFW Dresden
    • IFW Dresden, Germany

  • Alexander Lankau

    • IFW Dresden, Germany

  • Helmut Eschrig

    • IFW Dresden, Germany

  • Jeroen van den Brink

    • IFW, Dresden
    • IFW Dresden
    • IFW Dresden, Germany

  • Sergey Borisenko

    • IFW Dresden, Germany

  • Erik van Heumen

    • University of Amsterdam
    • Zeeman institute, University of Amsterdam, Netherlands

  • Mark S. Golden

    • Zeeman institute, University of Amsterdam, Netherlands