title: Anisotropic multiband many-body interactions in LuNi2B2C.
abstract: 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.
authors.affiliation: Hochfeld-Magnetlabor Dresden (HLD), Forschungszentrum Dresden-Rossendorf, D-01314 Dresden, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Bergk
authors.forename: V
authors.initials: V
authors.lastname: Petzold
authors.forename: H
authors.initials: H
authors.lastname: Rosner
authors.forename: S-L
authors.initials: SL
authors.lastname: Drechsler
authors.forename: M
authors.initials: M
authors.lastname: Bartkowiak
authors.forename: O
authors.initials: O
authors.lastname: Ignatchik
authors.forename: A D
authors.initials: AD
authors.lastname: Bianchi
authors.forename: I
authors.initials: I
authors.lastname: Sheikin
authors.forename: P C
authors.initials: PC
authors.lastname: Canfield
authors.forename: J
authors.initials: J
authors.lastname: Wosnitza