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SUMMARY:High temperature superconductors from fundamental science to hybri
 d electric aircraft - Prof. Jeff Tallon\, Victoria University of Wellingto
 n
DTSTART:20180704T100000Z
DTEND:20180704T113000Z
UID:TALK105847@talks.cam.ac.uk
CONTACT:Romy Hall
DESCRIPTION:Cuprate high-temperature superconductors have matured to the e
 xtent that many applications are now possible and indeed are currently bei
 ng rolled out. In our Institute these include MRI\, NMR\, flux pumps\, rot
 ating machinery\, transformers\, and next-generation aerospace propulsion.
  Key to these applications is wire performance as governed by critical cur
 rent density\, Jc.  By studying over 100 data sets for every class\, type 
 and symmetry of superconductor we show that Jc in self-field is actually a
  thermodynamic parameter\, independent of the pinning commonly believed to
  underlie its behaviour and governed only by the superfluid density. We re
 port a new critical state in the Meissner state and confirm this through m
 easurements of current and field distribution across practical conductors.
  \n\n
LOCATION:Mott Seminar Room (531)\, Cavendish Laboratory\, Department of Ph
 ysics
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