Anisotropic multiband many-body interactions in LuNi2B2C

We present a comprehensive de Haas-van Alphen study on the nonmagnetic borocarbide superconductor LuNi2B2C. The analysis of the angular-dependent effective masses for different bands in combination with full-potential density functional calculations allowed us to determine the mass-enhancement facto...

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Bibliographic Details
Published in:Physical review letters 2008-06, Vol.100 (25), p.257004-257004
Main Authors: Bergk, B, Petzold, V, Rosner, H, Drechsler, S-L, Bartkowiak, M, Ignatchik, O, Bianchi, A D, Sheikin, I, Canfield, P C, Wosnitza, J
Format: Article
Language:English
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Summary:We present a comprehensive de Haas-van Alphen study on the nonmagnetic borocarbide superconductor LuNi2B2C. The analysis of the angular-dependent effective masses for different bands in combination with full-potential density functional calculations allowed us to determine the mass-enhancement factors, lambda, for the different electronic bands and their wave-vector dependences. Our data clearly show the anisotropic multiband character of the superconductivity in LuNi2B2C.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.100.257004