Abstract
Measurements are reported on the electrical resistivity, susceptibility, dc-Meissner effect and specific heat of the tetragonal U-compound URu2Si2. AtT N ≅17 K, an antiferromagnetic phase transition is observed. This magnetically ordered state appears to coexist with superconductivity, which is found belowT c ≅1.5 K. An analysis of the upper critical field data reveals rather, unusual properties of both the normal- and the superconducting state. The effective mass of the quasiparticles at low temperatures is substantially enhanced (m *≅50 m0),though the measured low-temperature specific heat coefficient γ does not exceed 65 mJ/K2mol.
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Schlabitz, W., Baumann, J., Pollit, B. et al. Superconductivity and magnetic order in a strongly interacting fermi-system: URu2Si2 . Z. Physik B - Condensed Matter 62, 171–177 (1986). https://doi.org/10.1007/BF01323427
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DOI: https://doi.org/10.1007/BF01323427