title: Neutron magnetic form factor in strongly correlated materials.
abstract: We introduce a formalism to compute the neutron magnetic form factor FM(q) within a first-principles density functional theory and dynamical mean field theory. The approach treats spin and orbital interactions on the same footing and reduces to earlier methods in the fully localized or the fully itinerant limit. We test the method on various actinides of current interest NpCoGa5, PuSb and PuCoGa5, and we show that PuCoGa5 is in mixed valent state, which naturally explains the measured magnetic form factor.
authors.affiliation: Serin Physics Laboratory, Rutgers University, Piscataway, New Jersey 08854, USA.
authors.forename: Maria Elisabetta
authors.initials: ME
authors.lastname: Pezzoli
authors.forename: Kristjan
authors.initials: K
authors.lastname: Haule
authors.forename: Gabriel
authors.initials: G
authors.lastname: Kotliar