title: Magnetocapacitance: probe of spin-dependent potentials.
abstract: The magnetic field dependence of the capacitance of Pd-AlOx-Al thin-film structures has been measured. The observed quadratic dependence of capacitance on the magnetic field is consistent with a theoretical model that includes the effect of a spin-dependent electrochemical potential on electron screening in the paramagnetic Pd. This spin-dependent electrochemical potential is related to the Zeeman splitting of the narrow d bands in Pd. The quantitative details depend on the electronic band structure at the surface of Pd.
authors.affiliation: Department of Physics, University of Florida, Gainesville, Florida 32611-8440, USA.
authors.forename: K T
authors.initials: KT
authors.lastname: McCarthy
authors.forename: A F
authors.initials: AF
authors.lastname: Hebard
authors.forename: S B
authors.initials: SB
authors.lastname: Arnason