Adding Iron to the Diet

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Date/Time:Monday, 17 Sep 2012 from 4:10 pm to 5:00 pm
Location:Physics 0005
Phone:515-294-5441
Channel:Colloquium
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Ruslan Prozorov (Iowa State University)

The Ames Laboratory and Department of Physics & Astronomy, Iowa State University, USA
The discovery of Fe â€" based superconductors has infused new vigor into the search for answers to the multifaceted question of high â€" transition temperature superconductivity. Four years on, Fe â€" compounds have grown into a wide class of materials spanning intermetallics and oxides, pnictides and chalcogenides. Chemical doping both induces and suppresses superconductivity, affecting the electronic structure in the former and acting as pair â€" breaking disorder in the latter case. Experimental and theoretical research indicates nontrivial competition of multiband electronic interactions and a diverse interplay of magnetism, including longâ€"range, and superconductivity. In this talk I will outline our effort to understand the pairing mechanisms, effects of disorder and the emergence of a nematicity in various Fe â€" based superconductors.