# Delocalized charge carriers in strongly disordered t-J model

## TL;DR

This paper investigates how electron-magnon interactions affect charge transport in strongly disordered one-dimensional t-J models, revealing potential transient subdiffusive behavior that may evolve into normal diffusion over time.

## Contribution

It provides new insights into the transport behavior of strongly disordered t-J models, highlighting the possible transient nature of subdiffusive motion due to electron-magnon interactions.

## Key findings

- Charge carriers remain delocalized under strong disorder without spin excitation localization.
- Subdiffusive motion observed up to accessible timescales.
- Finite-size scaling suggests a transition from subdiffusive to diffusive transport.

## Abstract

We study the influence of the electron-magnon interaction on the particle transport in strongly disordered systems. The analysis is based on results obtained for a single hole in the one-dimensional t-J model. Unless there exists a mechanism that localizes spin excitations, the charge carrier remains delocalized even for a very strong disorder and shows subdiffusive motion up to the longest accessible times. However, upon inspection of the propagation times between neighboring sites as well as a careful finite-size scaling we conjecture that the anomalous subdiffusive transport may be transient and should eventually evolve into a normal diffusive motion.