Electronic structure of heavily electron-doped BaFe1.7Co 0.3AS2 studied by angle-resolved photoemission

Y. Sekiba, T. Sato, K. Nakayama, K. Terashima, P. Richard, J. H. Bowen, H. Ding, Y. M. Xu, L. J. Li, G. H. Cao, Z. A. Xu, T. Takahashi

Research output: Contribution to journalArticlepeer-review

114 Citations (Scopus)


We have performed high-resolution angle-resolved photoemission spectroscopy on heavily electron-doped non-superconducting (SC) BaFe1.7Co 0.3As2. We find that the two hole Fermi surface pockets at the Brillouin zone center observed in the hole-doped superconducting Ba 0.6K0.4Fe2As2 are absent or very small in this compound, while the two electron pockets at the zone corner significantly expand due to electron doping by the Co substitution. Comparison of the Fermi surface between non-SC and SC samples indicates that the coexistence of hole and electron pockets connected via the antiferromagnetic wave vector is essential in realizing the mechanism of superconductivity in the iron-based superconductors.

Original languageEnglish
Article number025020
JournalNew Journal of Physics
Publication statusPublished - Feb 27 2009

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Electronic structure of heavily electron-doped BaFe<sub>1.7</sub>Co <sub>0.3</sub>AS<sub>2</sub> studied by angle-resolved photoemission'. Together they form a unique fingerprint.

Cite this