# Spatially and time-resolved imaging of transport of indirect excitons in high magnetic fields

## TL;DR

This study presents direct measurements of how indirect excitons move in high magnetic fields, revealing that stronger magnetic fields slow their transport and providing insights into their diffusion behavior.

## Contribution

It offers the first combined experimental and theoretical analysis of magnetoexciton transport in high magnetic fields with spatial, spectral, and temporal resolution.

## Key findings

- Magnetic field increases slow down exciton transport.
- Transport distance correlates with photoluminescence energy changes.
- Theoretical model aligns with experimental data.

## Abstract

We present the direct measurements of magnetoexciton transport. Excitons give the opportunity to realize the high magnetic field regime for composite bosons with magnetic fields of a few Tesla. Long lifetimes of indirect excitons allow the study kinetics of magnetoexciton transport with time-resolved optical imaging of exciton photoluminescence. We performed spatially, spectrally, and time-resolved optical imaging of transport of indirect excitons in high magnetic fields. We observed that increasing magnetic field slows down magnetoexciton transport. The time-resolved measurements of the magnetoexciton transport distance allowed for an experimental estimation of the magnetoexciton diffusion coefficient. An enhancement of the exciton photoluminescence energy at the laser excitation spot was found to anti-correlate with the exciton transport distance. A theoretical model of indirect magnetoexciton transport is presented and is in agreement with the experimental data.