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SUMMARY:Superfluid stiffness and defect-assisted pair-breaking: getting a 
 handle on organic superconductors - Stephen Blundell\, University of Oxfor
 d
DTSTART:20060222T111500Z
DTEND:20060222T121500Z
UID:TALK4665@talks.cam.ac.uk
CONTACT:cb203
DESCRIPTION:Molecule-based superconductors provide an interesting\nplaygro
 und for exploring exotic superconductivity.  I will\ngive an overview of t
 he properties of these organic\nsuperconductors and discuss some scaling r
 elations which\nappear to exist between the superconducting transition\nte
 mperature\, the superfluid stiffness and the normal state\nconductivity. T
 hese new scaling properties hold as Tc varies\nover two orders of magnitud
 e for materials with differing\ndimensionality and contrasting molecular s
 tructure\, and are\ndramatically different from the equivalent scaling\npr
 operties observed within the family of cuprate\nsuperconductors. I will al
 so describe the results of some\nrecent experiments in which defects have 
 been introduced\ninto clean samples of the organic superconductor\nkappa-(
 BEDT-TTF)2Cu(SCN)2 in order to determine their effect\non the temperature 
 dependence of the conductivity and the\ncritical temperature.  These resul
 ts provide an important\nconstraint on models of the superconductivity in 
 this\nmaterial.
LOCATION:Mott Seminar Room\, Cavendish Laboratory\, Department of Physics
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