title: Electrical transport of spin-polarized carriers in disordered ultrathin films.
abstract: Slow, nonexponential relaxation of electrical transport accompanied by memory effects has been induced in quench-condensed ultrathin amorphous Bi films by the application of a parallel magnetic field. This behavior, which is very similar to space-charge limited current flow, is found in extremely thin films well on the insulating side of the thickness-tuned superconductor-insulator transition. It may be the signature of a collective state that forms when the carriers are spin polarized at low temperatures and in high magnetic fields.
authors.affiliation: School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, Minnesota 55455, USA.
authors.forename: L M
authors.initials: LM
authors.lastname: Hernandez
authors.forename: A
authors.initials: A
authors.lastname: Bhattacharya
authors.forename: Kevin A
authors.initials: KA
authors.lastname: Parendo
authors.forename: A M
authors.initials: AM
authors.lastname: Goldman