Modeling Antiferromagnetic Phase in Iron Pnictides: Weakly Ordered State

Details Modeling Antiferromagnetic Phase in Iron Pnictides: Weakly Ordered State Modeling Antiferromagnetic Phase in Iron Pnictides: Weakly Ordered State

2009-09-07

arxiv.org/abs/0909.1081v2

Phys. Rev. Lett. 103, 247202 (2009)

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevLett.103.247202

We examine electronic states of antiferromagnetic phase in iron pnictides by mean-field calculations of the optical conductivity. We find that a five-band model exhibiting a small magnetic moment, inconsistent with the first-principles calculations, reproduces well the excitation spectra characterized by a multi-peak structure emerging below the N\'{e}el temperature at low energy, together with an almost temperature-independent structure at high energy. Investigating the interlayer magnetoresistance for this model, we also predict its characteristic field dependence reflecting the Fermi surface.

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