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TT: Fachverband Tiefe Temperaturen

TT 25: FS: Iron-Based Superconductors

TT 25.4: Topical Talk

Mittwoch, 24. März 2010, 15:45–16:15, H20

Interplay among lattice, orbital and spin degrees of freedom in iron pnictides — •Roser Valenti — Institute of Theoretical Physics, Goethe University, Frankfurt am Main, Germany

By means of ab initio molecular dynamics calculations as well as dynamical mean field theory considerations, we investigate the role of lattice, orbital and spin degrees of freedom in iron pnictides. We analyze the nature of magnetism as well as the origin of structural and magnetic phase transitions under pressure in the 1111 and 122 families and discuss their implications on the superconductor behavior of these materials.