Magnetism of pnictides: density functional theory point of view

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Date/Time:Thursday, 01 Oct 2009 from 4:10 pm to 5:00 pm
Location:Physics 5
Phone:515-294-0849
Channel:Condensed Matter Physics
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V.P.Antropov (Ames Laboratory)

I will discuss the magnetic properties of recently discovered iron pnictides using band structure point of view. Topics are following:
1. Itinerant or localized?
2. Formation of magnetism in iron pnictides: what is a key?
3. The energetics of magnetic excitations: spin waves, Landau damping, longitudinal fluctuations and their energy scales.
4. The comparison of density functional calculations and the experimental results (neutron scattering).