Magnetic polarons in a nonequilibrium polariton condensate

Abstract

We consider a condensate of exciton-polaritons in a diluted magnetic semiconductor microcavity. Such system may exhibit magnetic self-trapping in the case of sufficiently strong coupling between polaritons and magnetic ions embedded in the semiconductor. We investigate the effect of the nonequilibrium nature of exciton-polaritons on the physics of the resulting self-trapped magnetic polarons. We find that multiple polarons can exist at the same time, and derive a critical condition for self-trapping which is different to the one predicted previously in the equilibrium case. Using the Bogoliubov-de Gennes approximation, we calculate the excitation spectrum and provide a physical explanation in terms of the effective magnetic attraction between polaritons, mediated by the ion subsystem.

References in corpus (13)

• Observation of Superfluidity of Polaritons in Semiconductor Microcavities
• Quantised Vortices in an Exciton-Polariton Fluid
• Exciton-polariton condensates
• Excitations in a non-equilibrium Bose-Einstein condensate of exciton-polaritons
• Polariton $\mathbb{Z}$ Topological Insulator
• Coherent Oscillations in an Exciton-Polariton Josephson Junction
• Polariton Condensate Transistor Switch
• Topological Polaritons and Excitons in Garden Variety Systems
• Probing the Dynamics of Spontaneous Quantum Vortices in Polariton Superfluids
• Dynamics and stability of dark solitons in exciton-polariton condensates
• Magnetic field tuning of exciton polaritons in a semiconductor microcavity
• Polariton Condensation in a One-Dimensional Disordered Potential
• Angular dependence of giant Zeeman effect for semi-magnetic cavity polaritons

Cited by in corpus (1)

• Critical dynamics and tree-like spatiotemporal patterns in exciton-polaritoncondensates