Gap Symmetry of Superconductivity in UPd2Al3

Abstract

The angle dependent thermal conductivity of the heavy-fermion superconductor UPd${}_2$Al${}_3$ in the vortex state was recently measured by Watanabe et al. Here we analyze this data from two perspectives: universal heat conduction and the angle-dependence. We conclude that the superconducting gap function $\Delta (\mathbf{k})$ in UPd${}_2$Al${}_3$ has horizontal nodes and is given by $\Delta (\mathbf{k})=\Delta \cos (2\chi )$, with $\chi =c{k}_z$.

arXiv comment8 pages, 4 figures, improved figures in replacement

References in corpus (6)

• Angular Position of Nodes in the Superconducting Gap of Quasi-2D Heavy-Fermion Superconductor CeCoIn_5
• Multiple Superconducting Phases in New Heavy Fermion Superconductor PrOs4Sb12
• Superconducting Gap Structure of Spin-Triplet Superconductor Sr_2RuO_4 Studied by Thermal Conductivity
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Cited by in corpus (7)

• Theory of magnetic excitons in the heavy-fermion superconductor $UP{d}_{2}A{l}_3$
• Gossamer Superconductivity, New Paradigm?
• Field-angle resolved specific heat and thermal conductivity in the vortex phase of UPd_2Al_3
• Thermal conductivity in the vortex state of the superconductor UPd_2Al_3
• Theory of tunneling spectroscopy in UPd2Al3
• Magnetic field orientation effect on specific heat in a p-wave superconductor
• Gap Symmetry and Thermal Conductivity in Nodal Superconductors