Using disorder as a probe of superconducting order parameter

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Date/Time:Thursday, 05 Dec 2013 - Thursday, 05 Dec 2013
Location:PHYSICS Hall Room 5
Phone:515-294-5630
Channel:Condensed Matter Physics
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Vivek Mishra
Argonne National Laboratory

In this talk, I will discuss the effect of disorder on a multi-band superconductor relevant to newly discovered iron based superconductors. I will describe various models of disorder and theoretical methods for including their effect on physical properties. I will discuss some phenomenological models of gap functions relevant to different families of iron based superconductors. These models are based on microscopic calculations with a spin-fluctuation pairing mechanism. I'll show how disorder can be used to extract information about the gap function from the experimental data.