Abstract
We report low-temperature specific-heat measurements in magnetic fields up to 12 T applied parallel and perpendicular to the tetragonal axis of the heavy fermion superconductor CePdIn. In contrast to its quasi-two-dimensional (2D) relative CeCoIn, the system displays an almost isotropic upper critical field. While there is no indication for a high-field and low-temperature phase in CePdIn, the data suggest a smeared weak first-order superconducting transition close to T. The normal-state electronic specific-heat coefficient displays logarithmically divergent behavior, comparable to CeCoIn and in agreement with 2D quantum criticality of spin-density-wave type.
- Received 11 August 2011
DOI:https://doi.org/10.1103/PhysRevB.84.140507
©2011 American Physical Society