Elecronic band structure of ferro-pnictide superconductors from ARPES experiment

A. A. Kordyuk, V. B. Zabolotnyy, D. V. Evtushinsky, A. N. Yaresko, B. Buchner, S. V. Borisenko

arXiv:1111.0288;
based on the talk presented at FPS'11 (2011 FPS Kordyuk.pdf 8.45 MB);
see also a review article Low Temp. Phys. 38, 888 (2012); arXiv:1209.0140.

ARPES experiments on iron based superconductors show that the differences between the measured and calculated electronic band structures look insignificant but can be very important for understanding of the mechanism of high temperature superconductivity. Here we focus on those differences for 111 and 122 compounds and discuss the observed correlation of the experimental band structure with superconductivity.


SUPPORTING ONLINE MATERIALS:




Fig.S1 (ppt).
Electronic band structure of 111 LiFeAs and 122 BaFe2As2 (BFA) / Ba0.6K0.4Fe2As2 (BKFA), calculated and derived from ARPES experiment.


Fig.S2 (ppt).
Phase diagram of the 122 family of ferro-pnictides complemented by the 122(Se) family as a generalized band structure driven diagram for the iron based superconductors.



Fig.S3 (mov).
Fermi surface model based on LDA calculations for parent BFA.



Fig.S4 (png).
Electronic density of states calculated for BaFe2As2 and LiFeAs.


© kord 2011