High-resolution ARPES study of electron-doped Fe-based superconductor BaFe1.85Co0.15As2

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

Research output: Contribution to journalArticle

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Abstract

We have performed high-resolution angle-resolved photoemission spectroscopy of an electron-doped iron-based superconductor BaFe1.85Co 0.15As2, and experimentally determined the Fermi-surface, the band structure and the superconducting gap. We found an isotropic s-wave-like superconducting gap on a hole pocket centered at the Γ point and on electron pockets at the M point. The superconducting gap magnitude is significantly enhanced on the Fermi-surfaces connected by the antiferromagnetic wave vector, suggesting the importance of an interband interaction on the pairing mechanism.

Original languageEnglish
JournalPhysica C: Superconductivity and its Applications
Volume470
Issue numberSUPPL.1
DOIs
Publication statusPublished - Dec 2010
Externally publishedYes

Fingerprint

Fermi surface
Fermi surfaces
Electrons
high resolution
Photoelectron spectroscopy
Band structure
electrons
photoelectric emission
iron
spectroscopy
Iron-based Superconductors
interactions

Keywords

  • ARPES
  • Iron-based superconductor
  • Superconducting gap

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Electronic, Optical and Magnetic Materials

Cite this

Kawahara, T., Terashima, K., Sekiba, Y., Bowen, J. H., Nakayama, K., Sato, T., ... Takahashi, T. (2010). High-resolution ARPES study of electron-doped Fe-based superconductor BaFe1.85Co0.15As2 Physica C: Superconductivity and its Applications, 470(SUPPL.1). https://doi.org/10.1016/j.physc.2009.11.129

High-resolution ARPES study of electron-doped Fe-based superconductor BaFe1.85Co0.15As2 . / Kawahara, T.; Terashima, Kensei; Sekiba, Y.; Bowen, J. H.; Nakayama, K.; Sato, T.; Richard, P.; Xu, Y. M.; Li, L. J.; Cao, G. H.; Xu, Z. A.; Ding, H.; Takahashi, T.

In: Physica C: Superconductivity and its Applications, Vol. 470, No. SUPPL.1, 12.2010.

Research output: Contribution to journalArticle

Kawahara, T, Terashima, K, Sekiba, Y, Bowen, JH, Nakayama, K, Sato, T, Richard, P, Xu, YM, Li, LJ, Cao, GH, Xu, ZA, Ding, H & Takahashi, T 2010, 'High-resolution ARPES study of electron-doped Fe-based superconductor BaFe1.85Co0.15As2 ', Physica C: Superconductivity and its Applications, vol. 470, no. SUPPL.1. https://doi.org/10.1016/j.physc.2009.11.129
Kawahara, T. ; Terashima, Kensei ; Sekiba, Y. ; Bowen, J. H. ; Nakayama, K. ; Sato, T. ; Richard, P. ; Xu, Y. M. ; Li, L. J. ; Cao, G. H. ; Xu, Z. A. ; Ding, H. ; Takahashi, T. / High-resolution ARPES study of electron-doped Fe-based superconductor BaFe1.85Co0.15As2 In: Physica C: Superconductivity and its Applications. 2010 ; Vol. 470, No. SUPPL.1.
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