title: Superconducting gap structure of the 115s revisited.
abstract: Density functional theory calculations of the electronic structure of Ce- and Pu-based heavy fermion superconductors in the so-called 115 family are performed. The gap equation is used to consider which superconducting order parameters are most favorable assuming a pairing interaction that is peaked at (π, π, qz)—the wavevector for the antiferromagnetic ordering found in close proximity. In addition to the commonly accepted dx2−y2 order parameter, there is evidence that an extended s-wave order parameter with nodes is also plausible. We discuss whether these results are consistent with current observations and possible measurements that could help distinguish between these scenarios.
authors: Los Alamos National Laboratory, Los Alamos, NM 87545, USA. fronning@lanl.gov
authors: F
authors: F
authors: Ronning
authors: J-X
authors: JX
authors: Zhu
authors: Tanmoy
authors: T
authors: Das
authors: M J
authors: MJ
authors: Graf
authors: R C
authors: RC
authors: Albers
authors: H B
authors: HB
authors: Rhee
authors: W E
authors: WE
authors: Pickett