Point-Contact Spectroscopy Deepens Mystery of Heavy-Fermion Superconductors

PhysOrg, 24 Mar 2005 Theoretical understanding of heavy-fermion superconductors has just slipped a notch or two, says a team of experimentalists. Researchers from the University of Illinois at Urbana-Champaign and Los Alamos National Laboratory recently used a sensitive technique called point-contact spectroscopy to explore Andreev reflection between a normal metal and a heavy-fermion superconductor. Conventional theories cannot account for their data, the scientists report. Read the article