2008/03/31 by G. J. McMullan, Greg McMullan, P. M. C. Rourke +8 · 46 citations
Materials Science · Physics and Astronomy · #Band gap #Condensed matter physics #Electron #Electronic band structure #Fermi Gamma-ray Space Telescope #Fermi gas #Fermi level #Fermi surface #Fermion #Iron-based superconductors research #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quasi Fermi level #Rare-earth and actinide compounds #Superconductivity #Valence (chemistry) #Valence band #cond-mat.str-el
paper · pdf · doi:10.1088/1367-2630/10/5/053029
published in New Journal of Physics 10(5), 053029 (IOP Publishing) · 23 pages, 12 figures, latex, iopart class
openalex publication_date 2008/05/20 · arxiv created 2008/07/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
Combining old and new de Haas-van Alphen (dHvA) and magnetoresistance data, we arrive at a detailed picture of the Fermi surface of the heavy fermion superconductor UPt 3 . Our work was partially motivated by a new proposal that two 5f valence electrons per formula unit in UPt 3 are localized by correlation effects—agreement with previous dHvA measurements of the Fermi surface was invoked in its support. Comprehensive comparison with our new observations shows that this 'partially localized' model fails to predict the existence of a major sheet of the Fermi surface, and is therefore less compatible with experiment than the originally proposed 'fully itinerant' model of the electronic structure of UPt 3 . In support of this conclusion, we offer a more complete analysis of the fully itinerant band structure calculation, where we find a number of previously unrecognized extremal orbits on the Fermi surface.