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SUMMARY:Heavy fermion superconductivity of a new transuranium compound NpP
 d5Al2 - Dai Aoki\, Grenoble
DTSTART:20071205T111500Z
DTEND:20071205T121500Z
UID:TALK9149@talks.cam.ac.uk
CONTACT:Michael Sutherland
DESCRIPTION:Several unconventional superconductors with non-s wave symmetr
 y are known in the rare earth and uranium compounds with f-electrons. Howe
 ver\, no superconductivity has been reported in the transuranium\nneptuniu
 m compounds in the past. Here we report the first observation of the super
 conductivity in the new heavy fermion compound NpPd5Al2. Novel superconduc
 ting phenomena\, such as high superconducting transition temperature (Tc=5
 K)\, strong paramagnetic effect\, large and highly anisotropic values of t
 he upper critical field Hc2\, and first-order phase transition at Hc2 were
  found. The d-wave superconductivity with point nodes is most likely reali
 zed in NpPd5Al2.\n
LOCATION:Mott Seminar Room\, Cavendish Laboratory\, Department of Physics
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