Dresden 2011 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 32: SC: Fe-based Superconductors - Theory

TT 32.6: Talk

Wednesday, March 16, 2011, 12:00–12:15, HSZ 304

Cleavage behavior and surface states in Ferropnictides — •Klaus Koepernik¹, Alexander Lankau¹, Helmut Eschrig¹, Jeroen van den Brink¹, Sergey Borisenko¹, Erik van Heumen², and Mark S. Golden² — ¹IFW Dresden, Germany — ²Zeeman Institute, University of Amsterdam, Netherlands

We present a density functional study of the surface electronic structure and the cleavage behavior of LiFeAs and Co-doped BaFe₂As₂. 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 family.