# Dynamical Generation of Spin Current and Phase Slip in Exciton-Polariton Condensates

## TL;DR

This paper demonstrates how to generate and control spin currents and phase slips in exciton-polariton condensates within semiconductor microcavities, revealing new mechanisms for spin dynamics and phase manipulation.

## Contribution

It introduces a method for dynamical generation of spin currents and phase slips in exciton-polariton condensates through stimulated spin-dependent scattering.

## Key findings

- Formation of circular polarized condensate with broken spin symmetry
- Identification of low energy spin current with oscillating spin pattern
- Prediction of dynamical phase slip involving ring-shaped phase jumps

## Abstract

We show that how to generate propagation of spin degree in spin-symmetric exciton-polariton condensates in a semiconductor microcavity. Due to the stimulated spin-dependent scattering between hot excitons and condensates, exciton polaritons form a circular polarized condensate with spontaneous breaking of the spin rotation symmetry. The spin antiferromagnetic state is developed evidently from the density and spin flow pumped by localized laser source. The low energy spin current is identified where the steady state is characterized by the oscillating spin pattern. Finally, we predict via simulation how to dynamical generation of phase slip where ring-shape phase jump shows the behavior of splitting and joining together.