Magnetic properties of iron pnictides from spin-spiral calculations

DIPC Seminars

Speaker: Dr. Alexander Yaresko, Max Planck Institute for Solid State Research, Stuttgart, Germany
When: 2010/06/23
14:00
Place: Donostia International Physics Center (DIPC).Paseo Manuel de Lardizabal, 4 (nearby the Facultad de Quimica), Donostia
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Magnetic properties of iron pnictides from spin-spiral calculations

Doping dependence of magnetic properties of novel iron-based superconductors LaFeAsO, BaFe2As2, and LiFeAs is studied using the band-structure approach. The stability of collinear anti-ferromagnetic order in these compounds is discussed. It is shown that the magnetic properties of iron pnictides cannot be described by the classical Heisenberg model with nearest- and next-nearest- neighbor exchange interactions.