title: Suppression of Zeeman splitting of the energy levels of exciton-polariton condensates in semiconductor microcavities in an external magnetic field.
abstract: A key property of equilibrium exciton-polariton condensates in semiconductor microcavities is the suppression of the Zeeman splitting under a magnetic field. By studying magnetophotoluminescence spectra from a GaAs microcavity, we show experimentally that a similar effect occurs in a nonequilibrium polariton condensate arising from polariton parametric scattering. In this case, the quenching of Zeeman splitting is related to a phase synchronization of spin-up and spin-down polarized polariton condensates caused by a nonlinear coupling via the coherent pump state.
authors.affiliation: Department of Physics and Astronomy, University of Sheffield, Sheffield, United Kingdom.
authors.forename: P
authors.initials: P
authors.lastname: Walker
authors.forename: T C H
authors.initials: TC
authors.lastname: Liew
authors.forename: D
authors.initials: D
authors.lastname: Sarkar
authors.forename: M
authors.initials: M
authors.lastname: Durska
authors.forename: A P D
authors.initials: AP
authors.lastname: Love
authors.forename: M S
authors.initials: MS
authors.lastname: Skolnick
authors.forename: J S
authors.initials: JS
authors.lastname: Roberts
authors.forename: I A
authors.initials: IA
authors.lastname: Shelykh
authors.forename: A V
authors.initials: AV
authors.lastname: Kavokin
authors.forename: D N
authors.initials: DN
authors.lastname: Krizhanovskii