title: Direct observation of the multisheet Fermi surface in the strongly correlated transition metal compound ZrZn2.
abstract: The existence of flat areas of a Fermi surface (FS), predicted by electronic structure calculations and used in models of both magnetically mediated and phonon-mediated Fulde-Ferrell-Larkin-Ovchinnikov superconducting states, is reported in the paramagnetic phase of the ferromagnetic superconductor ZrZn2 using positron annihilation. The strongly mass-renormalized FS sheet, dominating the Fermi level density of states, is seen for the first time. The delocalization of the magnetization is studied using measured and calculated magnetic Compton profiles.
authors.affiliation: H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, United Kingdom.
authors.forename: Zs
authors.initials: Z
authors.lastname: Major
authors.forename: S B
authors.initials: SB
authors.lastname: Dugdale
authors.forename: R J
authors.initials: RJ
authors.lastname: Watts
authors.forename: G
authors.initials: G
authors.lastname: Santi
authors.forename: M A
authors.initials: MA
authors.lastname: Alam
authors.forename: S M
authors.initials: SM
authors.lastname: Hayden
authors.forename: J A
authors.initials: JA
authors.lastname: Duffy
authors.forename: J W
authors.initials: JW
authors.lastname: Taylor
authors.forename: T
authors.initials: T
authors.lastname: Jarlborg
authors.forename: E
authors.initials: E
authors.lastname: Bruno
authors.forename: D
authors.initials: D
authors.lastname: Benea
authors.forename: H
authors.initials: H
authors.lastname: Ebert