2004/07/31 by Hyung Jin Won, H. Won, David Parker +8
Materials Science · Mathematics · Physics and Astronomy · #Condensed matter physics #Delta #Geometry #Heavy fermion #Heavy fermion superconductor #Iron-based superconductors research #Mathematics #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Superconductivity #Symmetry (geometry) #Thermal conduction #Thermal conductivity #Thermodynamics #Vortex #Vortex state #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.70.140509
8 pages, 4 figures, improved figures in replacement
arxiv created 2004/08/12 · openalex publication_date 2004/10/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The angle-dependent thermal conductivity of the heavy-fermion superconductor UPd2Al3 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 \ensuremathΔ(k) in UPd2Al3 has horizontal nodes and is given by \ensuremathΔ(k)=\ensuremathΔ\phantom\rule0.2em0excos(2\ensuremathχ), with \ensuremathχ=ckz.