کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1621153 | 1005744 | 2009 | 4 صفحه PDF | دانلود رایگان |
Measurements of the upper critical field Hc2Hc2 of the Pu-based heavy-fermion superconductor PuRhGa5 have been made using a torque magnetometer at temperatures down to 0.6 K and magnetic fields up to 17 T along the principal axes of the tetragonal structure. A linear temperature dependence of Hc2Hc2 down to Tc/10Tc/10 for H||cH||c and to Tc/2Tc/2 for H||abH||ab is observed. While the data appear to be inconsistent with both purely Pauli limiting or orbital effects governing the upper critical field, the linear T -dependence of Hc2Hc2 is well described by a two-band model of superconductivity involving coupled bands of heavy and light electrons. A close similarity between PuRhGa5 and the pressure-induced antiferromagnetic isostructural superconductor CeRhIn5 is also found.
Journal: Journal of Alloys and Compounds - Volume 488, Issue 2, 4 December 2009, Pages 554–557