2015/09/09 by K. Götze, Johannes Klotz, J. Klotz +10
Materials Science · Physics and Astronomy · #Condensed matter physics #Electron #Fermi level #Fermi surface #Heavy fermion #Heavy fermion superconductor #Iron-based superconductors research #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Superconductivity #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.92.115141
published as Phys. Rev. B 92, 115141 (2015) · accepted to Phys. Rev. B
arxiv created 2015/09/09 · openalex publication_date 2015/09/21 · arxiv updated 2015/09/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report low-temperature de Haas--van Alphen (dHvA) effect measurements in magnetic fields up to 35 T of the heavy-fermion superconductor Ce2PdIn8. The comparison of the experimental results with band-structure calculations implies that the 4f electrons are itinerant rather than localized. The cyclotron masses estimated at high field are only moderately enhanced, 8m0 and 14m0, but are substantially larger than the corresponding band masses. The observed angular dependence of the dHvA frequencies suggests quasi-two-dimensional Fermi surfaces in agreement with band-structure calculations. However, the deviation from ideal two-dimensionality is larger than in CeCoIn5, to which Ce2PdIn8 bears a lot of similarities. This subtle distinction accounts for the different superconducting critical temperatures of the two compounds.