Abrupt change in the energy gap of superconducting Ba1-xKxFe2As2 single crystals with hole doping

Details Abrupt change in the energy gap of superconducting Ba1-xKxFe2As2 single crystals with hole doping Abrupt change in the energy gap of superconducting Ba1-xKxFe2As2 single crystals with hole doping

2012-04-02

arxiv.org/abs/1204.0326v1

Physics

Condensed Matter

Superconductivity

Scientific paper

We performed a Laser angle-resolved photoemission spectroscopy (ARPES) study on a wide doping range of Ba1-xKxFe2As2 (BaK) and precisely determined the doping evolution of the superconducting (SC) gaps in this compound. The gap size of the outer hole Fermi surface (FS) sheet around the Brillioun zone (BZ) center shows an abrupt drop with overdoping (for x > 0.6) while the inner and middle FS gaps roughly scale with Tc. This is accompanied by the simultaneous disappearance of the electron FS sheet with similar orbital character at the BZ corner. These results browse the different contributions of X2-Y2 and XZ/YZ orbitals to superconductivity in BaK and can be hardly completely reproduced by the available theories on iron-based superconductors.

Affiliated with

Also associated with

No associations

Rating

Abrupt change in the energy gap of superconducting Ba1-xKxFe2As2 single crystals with hole doping does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Abrupt change in the energy gap of superconducting Ba1-xKxFe2As2 single crystals with hole doping, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Abrupt change in the energy gap of superconducting Ba1-xKxFe2As2 single crystals with hole doping will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-509278