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Author (up) Jaime, M.; Movshovich, R.; Stewart, G.R.; Beyermann, W.P.; Berisso, M.G.; Canfield, P.C. openurl 
  Title Specific heat of Ce3Bi4Pt3 at 60 T Type Journal Article
  Year 2001 Publication PHYSICA B Abbreviated Journal  
  Volume 294 Issue Pages 240-244  
  Keywords  
  Abstract Kondo insulator materials such as CeRhAs, CeRhSb, YbB12, Ce3Bi4Pt3, and SmB6, are 3d, 4f and 5f intermetallic compounds. At high temperatures they behave like metals but a gap d in the conduction band opens at the Fermi energy as the temperature is reduced. It has been proposed that the formation of the low-temperature gap is a consequence of the hybridization between the conduction band and the f-electron levels. If this is true, Kondo metal physics should be recovered when the gap is closed at high magnetic fields. We report here specific heat results of Ce-3 Bi4Pt3 in DC and pulsed magnetic fields up to 60 T. We see evidence for the reduction of the gap in 18 T and a rapid increase of the Sommerfeld coefficient C-H/T\(T -->0) in 30 T > H > 40 T. Numerical results and the analysis of the data with the Coqblin-Schrieffer model prove a field-induced Kondo insulator-to-Kondo metal crossover. (C) 2001 Elsevier Science B.V. All rights reserved.  
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  Series Volume Series Issue Edition  
  ISSN 0921-4526 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000167738800057 Approved no  
  Call Number BT @ hernan @ Serial 298  
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