Physics – Condensed Matter – Superconductivity
Scientific paper
2010-05-17
Phys. Rev. B 83, 094522 (2011)-Published March 16, 2011
Physics
Condensed Matter
Superconductivity
4 pages, 4 figures
Scientific paper
10.1103/PhysRevB.83.094522
We have performed a systematic photoemission study of the chemical potential shift as a function of carrier doping in a pnictide system based on BaFe$_2$As$_2$. The experimentally determined chemical potential shift is consistent with the prediction of a rigid band shift picture by the renormalized first-principle band calculations. This leads to an electron-hole asymmetry (EHA) in the Fermi surface (FS) nesting condition due to different effective masses for different FS sheets, which can be calculated from the Lindhard function of susceptibility. This built-in EHA from the band structure, which matches well with observed asymmetric superconducting domes in the phase diagram, strongly supports FS near-nesting driven superconductivity in the iron pnictides.
Chen Guo-Feng
Dai Xian-Xin
Ding Haibing
Fang Zhong
Fedorov Alexi V.
No associations
LandOfFree
Electron-Hole Asymmetry in Superconductivity of Pnictides Originated from the Observed Rigid Chemical Potential Shift 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 Electron-Hole Asymmetry in Superconductivity of Pnictides Originated from the Observed Rigid Chemical Potential Shift, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron-Hole Asymmetry in Superconductivity of Pnictides Originated from the Observed Rigid Chemical Potential Shift will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-299171