title: Excitonic spin-splitting in quantum wells with a tilted magnetic field.
abstract: This work aims to investigate the effects of magnetic field strength and direction on the electronic properties and optical response of GaAs/AlGaAs-based heterostructures. An investigation of the excitonic spin-splitting of a disordered multiple quantum well embedded in a wide parabolic quantum well is presented. The results for polarization-resolved photoluminescence show that the magnetic field dependencies of the excitonic spin-splitting and photoluminescence linewidth are crucially sensitive to magnetic field orientation. Our experimental results are in good agreement with the calculated Zeeman splitting obtained by the Luttinger model, which predicts a hybridization of the spin character of states in the valence band under tilted magnetic fields.
authors.affiliation: Universidade Federal de Santa Catarina, 89065-300 Blumenau, Santa Catarina, Brazil.
authors.forename: L Fernandes
authors.initials: LF
authors.lastname: dos Santos
authors.forename: L K
authors.initials: LK
authors.lastname: Castelano
authors.forename: J X
authors.initials: JX
authors.lastname: Padilha
authors.forename: Y
authors.initials: Y
authors.lastname: Pusep
authors.forename: G E
authors.initials: GE
authors.lastname: Marques
authors.forename: D
authors.initials: D
authors.lastname: Smirnov
authors.forename: A K
authors.initials: AK
authors.lastname: Bakarov
authors.forename: A I
authors.initials: AI
authors.lastname: Toropov
authors.forename: V
authors.initials: V
authors.lastname: Lopez-Richard