Delocalized charge carriers in strongly disordered t-J model
Strongly Correlated Electrons
2017-06-07 v1 Disordered Systems and Neural Networks
Quantum Gases
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.
Cite
@article{arxiv.1701.03659,
title = {Delocalized charge carriers in strongly disordered t-J model},
author = {Janez Bonca and Marcin Mierzejewski},
journal= {arXiv preprint arXiv:1701.03659},
year = {2017}
}