title: Electric-field manipulation of spin states in confined non-magnetic/magnetic heterostructures.
abstract: The energy spectrum and states of an electron in a non-magnetic/magnetic heterostructure placed between two materials (e.g. oxides) acting as barriers is studied in the presence of a magnetic field perpendicular or parallel to the well. A potential step is formed at the interface between the non-magnetic and magnetic material in the presence of a magnetic field since spin-up electrons see a barrier whereas the spin-down ones see a well. A rich band structure is obtained which can be tuned by a perpendicular electric field. Numerical results are presented for a ZnSe/Zn(1-x)Mn(x)Se heterostructure and their pertinence to spin-polarized transport is pointed out.
authors.affiliation: Departement Fysica, Universiteit Antwerpen (Campus Groenenborger), Groenenborgerlaan 171 B-2020 Antwerpen, Belgium. Department of Theoretical Physics, University of Szeged, Aradi vtk. tere 1, H-6720 Szeged, Hungary. Institute of Physics, University of West Hungary, Bajcsy Zsilinszky út 4-6 H-9400 Sopron, Hungary.
authors.forename: S
authors.initials: S
authors.lastname: Borza
authors.forename: F M
authors.initials: FM
authors.lastname: Peeters
authors.forename: P
authors.initials: P
authors.lastname: Vasilopoulos
authors.forename: G
authors.initials: G
authors.lastname: Papp