Orbital character variation of the Fermi surface and doping dependent changes of the dimensionality in BaFe2-x Cox As 2 from angle-resolved photoemission spectroscopy

S. Thirupathaiah, S. De Jong, R. Ovsyannikov, H. A. Dürr, A. Varykhalov, R. Follath, Y. Huang, R. Huisman, M. S. Golden, Yu Zhong Zhang, Harald Olaf Jeschke, R. Valentí, A. Erb, A. Gloskovskii, J. Fink

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Abstract

From a combination of high resolution angle-resolved photoemission spectroscopy and density functional calculations, we derive information on the dimensionality and the orbital character of the electronic states of BaFe 2-x Cox As2. Upon increasing Co doping, the electronic states in the vicinity of the Fermi level take on increasingly three-dimensional character. Both the orbital variation with kz and the more three-dimensional nature of the doped compounds have important consequences for the nesting conditions and thus possibly also for the appearance of antiferromagnetic and superconducting phases.

Original languageEnglish
Article number104512
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number10
DOIs
Publication statusPublished - Mar 12 2010
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Thirupathaiah, S., De Jong, S., Ovsyannikov, R., Dürr, H. A., Varykhalov, A., Follath, R., Huang, Y., Huisman, R., Golden, M. S., Zhang, Y. Z., Jeschke, H. O., Valentí, R., Erb, A., Gloskovskii, A., & Fink, J. (2010). Orbital character variation of the Fermi surface and doping dependent changes of the dimensionality in BaFe2-x Cox As 2 from angle-resolved photoemission spectroscopy. Physical Review B - Condensed Matter and Materials Physics, 81(10), [104512]. https://doi.org/10.1103/PhysRevB.81.104512