Polarized Nonequilibrium Bose-Einstein Condensates of Spinor Exciton Polaritons in a Magnetic Field

A. V. Larionov*, V. D. Kulakovskii, Sven Höfling, C. Schneider, L. Worschech, A. Forchel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

84 Citations (Scopus)

Abstract

The effect of a magnetic field on a spinor exciton-polariton condensate has been investigated. A quenching of a polariton Zeeman splitting and an elliptical polarization of the condensate have been observed at low magnetic fields B <2 T. The effects are attributed to a competition between the magnetic field induced circular polarization buildup and the spin-anisotropic polariton-polariton interaction which favors a linear polarization. The sign of the circular polarization of the condensate emission at B <3 T is negative, suggesting that a dynamic condensation in the excited spin state rather than the ground spin state takes place in this magnetic field range. From about 2T on, the Zeeman splitting opens and from then on the slope of the circular polarization degree changes its sign. For magnetic fields larger than the 3 T, the upper spin state occupation is energetically suppressed and circularly polarized condensation takes place in the ground state.

Original languageEnglish
Article number256401
Number of pages4
JournalPhysical Review Letters
Volume105
Issue number25
DOIs
Publication statusPublished - 14 Dec 2010

Keywords

  • SEMICONDUCTOR MICROCAVITIES
  • EXCITATIONS
  • SUPPRESSION

Fingerprint

Dive into the research topics of 'Polarized Nonequilibrium Bose-Einstein Condensates of Spinor Exciton Polaritons in a Magnetic Field'. Together they form a unique fingerprint.

Cite this