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Document type:
Zeitschriftenaufsatz 
Author(s):
Grube, K.; Drobnik, S.; Pfleiderer, C.; v. L̈ohneysen, H.; Bauer, E. D.; Maple, M. B. 
Title:
Specific Heat and Ac Susceptibility Studies of the Superconducting Phase Diagram of $\mathrm{Pr}{\mathrm{Os}}_{4}{\mathrm{Sb}}_{12}$ 
Abstract:
We report on ac-susceptibility and heat-capacity measurements of the superconductor PrOs4Sb12 in magnetic fields. The resulting phase diagram reveals two distinguishable superconducting phases with transitions at the upper critical field Bc2 and a slightly lower field B$∗$c2. Between B$∗$c2 and 0.7\texttimes{}B$∗$c2 the ac-susceptibility data shows a region with enhanced pinning properties characterized by an extended peak effect. The heat-capacity data reveal an extremely strongly coupled super...    »
 
Journal title:
Physical Review B 
Year:
2006 
Journal volume:
73 
Month:
mar 
Journal issue:
10 
Pages contribution:
104503