Anisotropic London Penetration Depth in Iron-based Superconductors

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Date/Time:Thursday, 28 Jan 2010 - Thursday, 28 Jan 2010
Location:Physics 5
Phone:515-294-0849
Channel:Condensed Matter Physics
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Prof. Ruslan Prozorov (Iowa State University and Ames Laboratory, US DOE)

I will summarize the available experimental studies of the London penetration depth in iron-based superconductors. While the literature is already full of comparisons with known single- and multi-gap nodeless (e.g., MgB2), as well as nodal (e.g., cuprates) superconductors, it seems that the pnictides occupy their own niche of unconventionality. A three-dimensional, doping -dependent electronic structure and strong pair-breaking effects are among some of the important features that must be taken into account to describe the observed behavior of these fascinating materials.