Low-temperature specific heat and static dc magnetizetion measurements have been performed for the superconducting state of the heavy-fermion compound UBe13. The superconducting phase diagram Bc2-T (B || ) has been obtained by our specific heat and magnetization measurements. From the slope of the upper critical field and specific heat jumps at superconducting transition temperatures in magnetic fields, we have also obtained a temperature dependence of Ginzburg-Landau parameter κ2 along . It has been revealed that κ2 decreases with decreasing temperature down to 0.5 K, which indicates that a paramagnetic effect may be present at least down to 0.5 K for .
- Ginzburg-Landau parameter
- Heavy fermion superconductivity
- Specific heat
ASJC Scopus subject areas
- Physics and Astronomy(all)