Indexed by: Journal paper

Co-author: M Neupane, P Richard, Y-M Xu, K Nakayama, T Sato, T Takahashi, AV Federov, G Xu, X Dai, Z Fang, Z Wang, G-F Chen, N-L Wang, H-H Wen, H Ding

Journal: Physical Review B

Included Journals: SCI

Discipline: Science

First-Level Discipline: Physics

Document Type: J

Volume: 83

Issue: 9

Page Number: 094522

Date of Publication: 2011-03-16

Abstract: 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 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.