Regensburg 2013 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 12: Poster Session Superconductivity
TT 12.24: Poster
Montag, 11. März 2013, 15:00–19:00, Poster D
Eight-band model for iron arsenides: Functional renormalization group study — •Julian Lichtenstein1, Stefan Maier1, and Carsten Honerkamp1,2 — 1Institute for Theoretical Solid State Physics, RWTH Aachen University, Germany — 2JARA - Fundamentals of Future Information Technology
We analyze an effective two-dimensional eight-band model [1] for LaOFeAs and SmOFeAs within a functional renormalization group (fRG) approach. Upon varying parameters from LaOFeAs to SmOFeAs, we find an increasing critical scale for superconducting instabilities, while the critical scales of spin-density wave ordering change only by a small amount.
[1] O. K. Andersen and L. Boeri, Ann. Phys. (Berlin) 523, 8 (2011)