The absence of surface states for LiFeAs

Alexander Lankau; Klaus Koepernik; Sergey Borisenko; Volodymyr Zabolotnyy; Bernd Büchner; Jeroen van den Brink; Helmut Eschrig

The absence of surface states for LiFeAs

Superconductivity 2010-09-01 v1

Authors: Alexander Lankau , Klaus Koepernik , Sergey Borisenko , Volodymyr Zabolotnyy , Bernd Büchner , Jeroen van den Brink , Helmut Eschrig

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Abstract

We investigate the cleaving behavior of LiFeAs and determine its surface electronic structure by detailed density functional calculations. We show that due to the neutral surface of LiFeAs after cleaving, barely any influence of the surface on the electronic states is present. Therefore the data of surface sensitive probes such as angle resolved photoemission spectroscopy (ARPES) represent to a high degree the bulk electronic structure. This we highlighted by a direct comparison of the calculations to ARPES spectra.

Keywords

LiFeAs surface electronic structure density functional calculations angle resolved photoemission spectroscopy bulk electronic structure

Cite

@article{arxiv.1008.5234,
  title  = {The absence of surface states for LiFeAs},
  author = {Alexander Lankau and Klaus Koepernik and Sergey Borisenko and Volodymyr Zabolotnyy and Bernd Büchner and Jeroen van den Brink and Helmut Eschrig},
  journal= {arXiv preprint arXiv:1008.5234},
  year   = {2010}
}

The absence of surface states for LiFeAs

Abstract

Keywords

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